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Finding the Fourth Proportional to 70,442.91, 97,213.59 and 38,611.80

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Solution

The fourth proportional to 70,442.91, 97,213.59 and 38,611.80 is: 53,285.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,442.91 : 97,213.59 = 38,611.80 : x
  2. Step 2: Convert to fraction form
    70,442.91/97,213.59 = 38,611.80/x
  3. Step 3: Cross multiply
    70,442.91x = 97,213.59 × 38,611.80
  4. Step 4: Simplify right side
    70,442.91x = 3,753,591,694.36
  5. Step 5: Solve for x
    x = 3,753,591,694.36/70,442.91
  6. Step 6: Final answer
    x = 53,285.59

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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.