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Finding the Fourth Proportional to 60,159.61, 90,240.78 and 20,178.52

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Solution

The fourth proportional to 60,159.61, 90,240.78 and 20,178.52 is: 30,268.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,159.61 : 90,240.78 = 20,178.52 : x
  2. Step 2: Convert to fraction form
    60,159.61/90,240.78 = 20,178.52/x
  3. Step 3: Cross multiply
    60,159.61x = 90,240.78 × 20,178.52
  4. Step 4: Simplify right side
    60,159.61x = 1,820,925,234.11
  5. Step 5: Solve for x
    x = 1,820,925,234.11/60,159.61
  6. Step 6: Final answer
    x = 30,268.23

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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.