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Finding the Fourth Proportional to 62,071.92, 85,688.28 and 39,728.88

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Solution

The fourth proportional to 62,071.92, 85,688.28 and 39,728.88 is: 54,844.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,071.92 : 85,688.28 = 39,728.88 : x
  2. Step 2: Convert to fraction form
    62,071.92/85,688.28 = 39,728.88/x
  3. Step 3: Cross multiply
    62,071.92x = 85,688.28 × 39,728.88
  4. Step 4: Simplify right side
    62,071.92x = 3,404,299,393.53
  5. Step 5: Solve for x
    x = 3,404,299,393.53/62,071.92
  6. Step 6: Final answer
    x = 54,844.44

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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.