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Finding the Fourth Proportional to 87,055, 130,619.45 and 47,565.98

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Solution

The fourth proportional to 87,055, 130,619.45 and 47,565.98 is: 71,369.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,055 : 130,619.45 = 47,565.98 : x
  2. Step 2: Convert to fraction form
    87,055/130,619.45 = 47,565.98/x
  3. Step 3: Cross multiply
    87,055x = 130,619.45 × 47,565.98
  4. Step 4: Simplify right side
    87,055x = 6,213,042,146.31
  5. Step 5: Solve for x
    x = 6,213,042,146.31/87,055
  6. Step 6: Final answer
    x = 71,369.16

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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.