Home / 86,159.28-129,238.96-26,999.58

Finding the Fourth Proportional to 86,159.28, 129,238.96 and 26,999.58

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Solution

The fourth proportional to 86,159.28, 129,238.96 and 26,999.58 is: 40,499.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,159.28 : 129,238.96 = 26,999.58 : x
  2. Step 2: Convert to fraction form
    86,159.28/129,238.96 = 26,999.58/x
  3. Step 3: Cross multiply
    86,159.28x = 129,238.96 × 26,999.58
  4. Step 4: Simplify right side
    86,159.28x = 3,489,397,639.64
  5. Step 5: Solve for x
    x = 3,489,397,639.64/86,159.28
  6. Step 6: Final answer
    x = 40,499.38

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Half scale
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Double scale
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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.