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Finding the Fourth Proportional to 71,622.30, 107,455.05 and 38,358.30

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Solution

The fourth proportional to 71,622.30, 107,455.05 and 38,358.30 is: 57,549.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,622.30 : 107,455.05 = 38,358.30 : x
  2. Step 2: Convert to fraction form
    71,622.30/107,455.05 = 38,358.30/x
  3. Step 3: Cross multiply
    71,622.30x = 107,455.05 × 38,358.30
  4. Step 4: Simplify right side
    71,622.30x = 4,121,793,044.42
  5. Step 5: Solve for x
    x = 4,121,793,044.42/71,622.30
  6. Step 6: Final answer
    x = 57,549.02

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.