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Finding the Fourth Proportional to 65,750.52, 90,731.17 and 37,071.21

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Solution

The fourth proportional to 65,750.52, 90,731.17 and 37,071.21 is: 51,155.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,750.52 : 90,731.17 = 37,071.21 : x
  2. Step 2: Convert to fraction form
    65,750.52/90,731.17 = 37,071.21/x
  3. Step 3: Cross multiply
    65,750.52x = 90,731.17 × 37,071.21
  4. Step 4: Simplify right side
    65,750.52x = 3,363,513,927.05
  5. Step 5: Solve for x
    x = 3,363,513,927.05/65,750.52
  6. Step 6: Final answer
    x = 51,155.70

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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.