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Finding the Fourth Proportional to 70,446.88, 97,217.12 and 38,615.68

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Solution

The fourth proportional to 70,446.88, 97,217.12 and 38,615.68 is: 53,289.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,446.88 : 97,217.12 = 38,615.68 : x
  2. Step 2: Convert to fraction form
    70,446.88/97,217.12 = 38,615.68/x
  3. Step 3: Cross multiply
    70,446.88x = 97,217.12 × 38,615.68
  4. Step 4: Simplify right side
    70,446.88x = 3,754,105,196.44
  5. Step 5: Solve for x
    x = 3,754,105,196.44/70,446.88
  6. Step 6: Final answer
    x = 53,289.87

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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.