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Finding the Fourth Proportional to 73,865.48, 101,930.80 and 42,031.40

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Solution

The fourth proportional to 73,865.48, 101,930.80 and 42,031.40 is: 58,001.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,865.48 : 101,930.80 = 42,031.40 : x
  2. Step 2: Convert to fraction form
    73,865.48/101,930.80 = 42,031.40/x
  3. Step 3: Cross multiply
    73,865.48x = 101,930.80 × 42,031.40
  4. Step 4: Simplify right side
    73,865.48x = 4,284,294,227.12
  5. Step 5: Solve for x
    x = 4,284,294,227.12/73,865.48
  6. Step 6: Final answer
    x = 58,001.30

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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.