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Finding the Fourth Proportional to 87,574, 131,326.98 and 28,395.40

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Solution

The fourth proportional to 87,574, 131,326.98 and 28,395.40 is: 42,582.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,574 : 131,326.98 = 28,395.40 : x
  2. Step 2: Convert to fraction form
    87,574/131,326.98 = 28,395.40/x
  3. Step 3: Cross multiply
    87,574x = 131,326.98 × 28,395.40
  4. Step 4: Simplify right side
    87,574x = 3,729,082,127.89
  5. Step 5: Solve for x
    x = 3,729,082,127.89/87,574
  6. Step 6: Final answer
    x = 42,582.07

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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.