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Finding the Fourth Proportional to 87,973.80, 131,968.80 and 35,372.40

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Solution

The fourth proportional to 87,973.80, 131,968.80 and 35,372.40 is: 53,061.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,973.80 : 131,968.80 = 35,372.40 : x
  2. Step 2: Convert to fraction form
    87,973.80/131,968.80 = 35,372.40/x
  3. Step 3: Cross multiply
    87,973.80x = 131,968.80 × 35,372.40
  4. Step 4: Simplify right side
    87,973.80x = 4,668,053,181.12
  5. Step 5: Solve for x
    x = 4,668,053,181.12/87,973.80
  6. Step 6: Final answer
    x = 53,061.86

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.