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Finding the Fourth Proportional to 60,131.80, 90,219.60 and 28,551.52

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Solution

The fourth proportional to 60,131.80, 90,219.60 and 28,551.52 is: 42,837.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,131.80 : 90,219.60 = 28,551.52 : x
  2. Step 2: Convert to fraction form
    60,131.80/90,219.60 = 28,551.52/x
  3. Step 3: Cross multiply
    60,131.80x = 90,219.60 × 28,551.52
  4. Step 4: Simplify right side
    60,131.80x = 2,575,906,713.79
  5. Step 5: Solve for x
    x = 2,575,906,713.79/60,131.80
  6. Step 6: Final answer
    x = 42,837.68

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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.