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Finding the Fourth Proportional to 87,369.80, 131,054.70 and 52,291.40

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Solution

The fourth proportional to 87,369.80, 131,054.70 and 52,291.40 is: 78,437.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,369.80 : 131,054.70 = 52,291.40 : x
  2. Step 2: Convert to fraction form
    87,369.80/131,054.70 = 52,291.40/x
  3. Step 3: Cross multiply
    87,369.80x = 131,054.70 × 52,291.40
  4. Step 4: Simplify right side
    87,369.80x = 6,853,033,739.58
  5. Step 5: Solve for x
    x = 6,853,033,739.58/87,369.80
  6. Step 6: Final answer
    x = 78,437.10

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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.