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Finding the Fourth Proportional to 86,490.96, 129,753.95 and 36,570.97

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Solution

The fourth proportional to 86,490.96, 129,753.95 and 36,570.97 is: 54,863.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,490.96 : 129,753.95 = 36,570.97 : x
  2. Step 2: Convert to fraction form
    86,490.96/129,753.95 = 36,570.97/x
  3. Step 3: Cross multiply
    86,490.96x = 129,753.95 × 36,570.97
  4. Step 4: Simplify right side
    86,490.96x = 4,745,227,792.17
  5. Step 5: Solve for x
    x = 4,745,227,792.17/86,490.96
  6. Step 6: Final answer
    x = 54,863.86

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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.