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Finding the Fourth Proportional to 70,321.92, 97,044.28 and 38,490.85

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Solution

The fourth proportional to 70,321.92, 97,044.28 and 38,490.85 is: 53,117.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,321.92 : 97,044.28 = 38,490.85 : x
  2. Step 2: Convert to fraction form
    70,321.92/97,044.28 = 38,490.85/x
  3. Step 3: Cross multiply
    70,321.92x = 97,044.28 × 38,490.85
  4. Step 4: Simplify right side
    70,321.92x = 3,735,316,304.04
  5. Step 5: Solve for x
    x = 3,735,316,304.04/70,321.92
  6. Step 6: Final answer
    x = 53,117.38

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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.