Home / 86,165.85-129,248.82-27,006.12

Finding the Fourth Proportional to 86,165.85, 129,248.82 and 27,006.12

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Solution

The fourth proportional to 86,165.85, 129,248.82 and 27,006.12 is: 40,509.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,165.85 : 129,248.82 = 27,006.12 : x
  2. Step 2: Convert to fraction form
    86,165.85/129,248.82 = 27,006.12/x
  3. Step 3: Cross multiply
    86,165.85x = 129,248.82 × 27,006.12
  4. Step 4: Simplify right side
    86,165.85x = 3,490,509,142.78
  5. Step 5: Solve for x
    x = 3,490,509,142.78/86,165.85
  6. Step 6: Final answer
    x = 40,509.19

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Half scale
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Double scale
Find fourth proportional to 86,166.85, 129,250.32 and 27,007.12
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.