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Finding the Fourth Proportional to 83,663.62, 115,455.99 and 45,940.30

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Solution

The fourth proportional to 83,663.62, 115,455.99 and 45,940.30 is: 63,397.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,663.62 : 115,455.99 = 45,940.30 : x
  2. Step 2: Convert to fraction form
    83,663.62/115,455.99 = 45,940.30/x
  3. Step 3: Cross multiply
    83,663.62x = 115,455.99 × 45,940.30
  4. Step 4: Simplify right side
    83,663.62x = 5,304,082,817.40
  5. Step 5: Solve for x
    x = 5,304,082,817.40/83,663.62
  6. Step 6: Final answer
    x = 63,397.72

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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.