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Finding the Fourth Proportional to 70,557.78, 97,384.80 and 42,279.90

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Solution

The fourth proportional to 70,557.78, 97,384.80 and 42,279.90 is: 58,355.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,557.78 : 97,384.80 = 42,279.90 : x
  2. Step 2: Convert to fraction form
    70,557.78/97,384.80 = 42,279.90/x
  3. Step 3: Cross multiply
    70,557.78x = 97,384.80 × 42,279.90
  4. Step 4: Simplify right side
    70,557.78x = 4,117,419,605.52
  5. Step 5: Solve for x
    x = 4,117,419,605.52/70,557.78
  6. Step 6: Final answer
    x = 58,355.29

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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.