Home / 86,113.13-129,169.69-23,783.63

Finding the Fourth Proportional to 86,113.13, 129,169.69 and 23,783.63

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Solution

The fourth proportional to 86,113.13, 129,169.69 and 23,783.63 is: 35,675.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,113.13 : 129,169.69 = 23,783.63 : x
  2. Step 2: Convert to fraction form
    86,113.13/129,169.69 = 23,783.63/x
  3. Step 3: Cross multiply
    86,113.13x = 129,169.69 × 23,783.63
  4. Step 4: Simplify right side
    86,113.13x = 3,072,123,408.87
  5. Step 5: Solve for x
    x = 3,072,123,408.87/86,113.13
  6. Step 6: Final answer
    x = 35,675.44

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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.