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Finding the Fourth Proportional to 70,753.78, 97,637.82 and 38,922.40

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Solution

The fourth proportional to 70,753.78, 97,637.82 and 38,922.40 is: 53,711.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,753.78 : 97,637.82 = 38,922.40 : x
  2. Step 2: Convert to fraction form
    70,753.78/97,637.82 = 38,922.40/x
  3. Step 3: Cross multiply
    70,753.78x = 97,637.82 × 38,922.40
  4. Step 4: Simplify right side
    70,753.78x = 3,800,298,285.17
  5. Step 5: Solve for x
    x = 3,800,298,285.17/70,753.78
  6. Step 6: Final answer
    x = 53,711.59

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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.