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Finding the Fourth Proportional to 70,342.92, 97,069.59 and 38,505.78

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Solution

The fourth proportional to 70,342.92, 97,069.59 and 38,505.78 is: 53,135.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,342.92 : 97,069.59 = 38,505.78 : x
  2. Step 2: Convert to fraction form
    70,342.92/97,069.59 = 38,505.78/x
  3. Step 3: Cross multiply
    70,342.92x = 97,069.59 × 38,505.78
  4. Step 4: Simplify right side
    70,342.92x = 3,737,740,277.23
  5. Step 5: Solve for x
    x = 3,737,740,277.23/70,342.92
  6. Step 6: Final answer
    x = 53,135.98

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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.