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Finding the Fourth Proportional to 68,011.32, 101,930.54 and 38,445.72

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Solution

The fourth proportional to 68,011.32, 101,930.54 and 38,445.72 is: 57,619.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,011.32 : 101,930.54 = 38,445.72 : x
  2. Step 2: Convert to fraction form
    68,011.32/101,930.54 = 38,445.72/x
  3. Step 3: Cross multiply
    68,011.32x = 101,930.54 × 38,445.72
  4. Step 4: Simplify right side
    68,011.32x = 3,918,793,000.29
  5. Step 5: Solve for x
    x = 3,918,793,000.29/68,011.32
  6. Step 6: Final answer
    x = 57,619.72

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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.