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Finding the Fourth Proportional to 70,542.80, 97,351.86 and 38,712.84

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Solution

The fourth proportional to 70,542.80, 97,351.86 and 38,712.84 is: 53,425.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,542.80 : 97,351.86 = 38,712.84 : x
  2. Step 2: Convert to fraction form
    70,542.80/97,351.86 = 38,712.84/x
  3. Step 3: Cross multiply
    70,542.80x = 97,351.86 × 38,712.84
  4. Step 4: Simplify right side
    70,542.80x = 3,768,766,979.88
  5. Step 5: Solve for x
    x = 3,768,766,979.88/70,542.80
  6. Step 6: Final answer
    x = 53,425.26

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.