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Finding the Fourth Proportional to 89,763.66, 123,868.26 and 49,477.74

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Solution

The fourth proportional to 89,763.66, 123,868.26 and 49,477.74 is: 68,276.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,763.66 : 123,868.26 = 49,477.74 : x
  2. Step 2: Convert to fraction form
    89,763.66/123,868.26 = 49,477.74/x
  3. Step 3: Cross multiply
    89,763.66x = 123,868.26 × 49,477.74
  4. Step 4: Simplify right side
    89,763.66x = 6,128,721,562.53
  5. Step 5: Solve for x
    x = 6,128,721,562.53/89,763.66
  6. Step 6: Final answer
    x = 68,276.20

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.