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Finding the Fourth Proportional to 70,381.72, 97,124.16 and 38,550.88

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Solution

The fourth proportional to 70,381.72, 97,124.16 and 38,550.88 is: 53,198.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,381.72 : 97,124.16 = 38,550.88 : x
  2. Step 2: Convert to fraction form
    70,381.72/97,124.16 = 38,550.88/x
  3. Step 3: Cross multiply
    70,381.72x = 97,124.16 × 38,550.88
  4. Step 4: Simplify right side
    70,381.72x = 3,744,221,837.26
  5. Step 5: Solve for x
    x = 3,744,221,837.26/70,381.72
  6. Step 6: Final answer
    x = 53,198.78

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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.