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Finding the Fourth Proportional to 70,748.69, 97,632.68 and 38,916.90

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Solution

The fourth proportional to 70,748.69, 97,632.68 and 38,916.90 is: 53,705.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,748.69 : 97,632.68 = 38,916.90 : x
  2. Step 2: Convert to fraction form
    70,748.69/97,632.68 = 38,916.90/x
  3. Step 3: Cross multiply
    70,748.69x = 97,632.68 × 38,916.90
  4. Step 4: Simplify right side
    70,748.69x = 3,799,561,049.71
  5. Step 5: Solve for x
    x = 3,799,561,049.71/70,748.69
  6. Step 6: Final answer
    x = 53,705.04

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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.