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Finding the Fourth Proportional to 70,439.76, 97,209.36 and 38,608.65

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Solution

The fourth proportional to 70,439.76, 97,209.36 and 38,608.65 is: 53,281.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,439.76 : 97,209.36 = 38,608.65 : x
  2. Step 2: Convert to fraction form
    70,439.76/97,209.36 = 38,608.65/x
  3. Step 3: Cross multiply
    70,439.76x = 97,209.36 × 38,608.65
  4. Step 4: Simplify right side
    70,439.76x = 3,753,122,156.96
  5. Step 5: Solve for x
    x = 3,753,122,156.96/70,439.76
  6. Step 6: Final answer
    x = 53,281.30

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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.