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Finding the Fourth Proportional to 90,479.70, 124,862.67 and 49,643.55

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Solution

The fourth proportional to 90,479.70, 124,862.67 and 49,643.55 is: 68,508.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,479.70 : 124,862.67 = 49,643.55 : x
  2. Step 2: Convert to fraction form
    90,479.70/124,862.67 = 49,643.55/x
  3. Step 3: Cross multiply
    90,479.70x = 124,862.67 × 49,643.55
  4. Step 4: Simplify right side
    90,479.70x = 6,198,626,201.28
  5. Step 5: Solve for x
    x = 6,198,626,201.28/90,479.70
  6. Step 6: Final answer
    x = 68,508.47

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