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Finding the Fourth Proportional to 62,883.50, 86,741.28 and 38,688.57

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Solution

The fourth proportional to 62,883.50, 86,741.28 and 38,688.57 is: 53,366.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,883.50 : 86,741.28 = 38,688.57 : x
  2. Step 2: Convert to fraction form
    62,883.50/86,741.28 = 38,688.57/x
  3. Step 3: Cross multiply
    62,883.50x = 86,741.28 × 38,688.57
  4. Step 4: Simplify right side
    62,883.50x = 3,355,896,083.17
  5. Step 5: Solve for x
    x = 3,355,896,083.17/62,883.50
  6. Step 6: Final answer
    x = 53,366.88

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.