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Finding the Fourth Proportional to 70,694.61, 97,558.87 and 38,865.55

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Solution

The fourth proportional to 70,694.61, 97,558.87 and 38,865.55 is: 53,634.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,694.61 : 97,558.87 = 38,865.55 : x
  2. Step 2: Convert to fraction form
    70,694.61/97,558.87 = 38,865.55/x
  3. Step 3: Cross multiply
    70,694.61x = 97,558.87 × 38,865.55
  4. Step 4: Simplify right side
    70,694.61x = 3,791,679,139.93
  5. Step 5: Solve for x
    x = 3,791,679,139.93/70,694.61
  6. Step 6: Final answer
    x = 53,634.63

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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.