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Finding the Fourth Proportional to 70,438.72, 97,207.82 and 38,607.62

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Solution

The fourth proportional to 70,438.72, 97,207.82 and 38,607.62 is: 53,279.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,438.72 : 97,207.82 = 38,607.62 : x
  2. Step 2: Convert to fraction form
    70,438.72/97,207.82 = 38,607.62/x
  3. Step 3: Cross multiply
    70,438.72x = 97,207.82 × 38,607.62
  4. Step 4: Simplify right side
    70,438.72x = 3,752,962,575.59
  5. Step 5: Solve for x
    x = 3,752,962,575.59/70,438.72
  6. Step 6: Final answer
    x = 53,279.82

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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.