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Finding the Fourth Proportional to 60,139.45, 90,146.88 and 49,497.66

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Solution

The fourth proportional to 60,139.45, 90,146.88 and 49,497.66 is: 74,195.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,139.45 : 90,146.88 = 49,497.66 : x
  2. Step 2: Convert to fraction form
    60,139.45/90,146.88 = 49,497.66/x
  3. Step 3: Cross multiply
    60,139.45x = 90,146.88 × 49,497.66
  4. Step 4: Simplify right side
    60,139.45x = 4,462,059,165.57
  5. Step 5: Solve for x
    x = 4,462,059,165.57/60,139.45
  6. Step 6: Final answer
    x = 74,195.21

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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.