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Finding the Fourth Proportional to 70,981.68, 97,955.24 and 39,149.76

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Solution

The fourth proportional to 70,981.68, 97,955.24 and 39,149.76 is: 54,026.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,981.68 : 97,955.24 = 39,149.76 : x
  2. Step 2: Convert to fraction form
    70,981.68/97,955.24 = 39,149.76/x
  3. Step 3: Cross multiply
    70,981.68x = 97,955.24 × 39,149.76
  4. Step 4: Simplify right side
    70,981.68x = 3,834,924,136.74
  5. Step 5: Solve for x
    x = 3,834,924,136.74/70,981.68
  6. Step 6: Final answer
    x = 54,026.96

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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.