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Finding the Fourth Proportional to 86,304.60, 129,507.12 and 36,381.60

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Solution

The fourth proportional to 86,304.60, 129,507.12 and 36,381.60 is: 54,593.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,304.60 : 129,507.12 = 36,381.60 : x
  2. Step 2: Convert to fraction form
    86,304.60/129,507.12 = 36,381.60/x
  3. Step 3: Cross multiply
    86,304.60x = 129,507.12 × 36,381.60
  4. Step 4: Simplify right side
    86,304.60x = 4,711,676,236.99
  5. Step 5: Solve for x
    x = 4,711,676,236.99/86,304.60
  6. Step 6: Final answer
    x = 54,593.57

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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.