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Finding the Fourth Proportional to 90,295.32, 124,545.63 and 61,951.80

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Solution

The fourth proportional to 90,295.32, 124,545.63 and 61,951.80 is: 85,451.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,295.32 : 124,545.63 = 61,951.80 : x
  2. Step 2: Convert to fraction form
    90,295.32/124,545.63 = 61,951.80/x
  3. Step 3: Cross multiply
    90,295.32x = 124,545.63 × 61,951.80
  4. Step 4: Simplify right side
    90,295.32x = 7,715,825,960.63
  5. Step 5: Solve for x
    x = 7,715,825,960.63/90,295.32
  6. Step 6: Final answer
    x = 85,451.01

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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.