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Finding the Fourth Proportional to 90,107.57, 124,377.95 and 63,256.68

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Solution

The fourth proportional to 90,107.57, 124,377.95 and 63,256.68 is: 87,314.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,107.57 : 124,377.95 = 63,256.68 : x
  2. Step 2: Convert to fraction form
    90,107.57/124,377.95 = 63,256.68/x
  3. Step 3: Cross multiply
    90,107.57x = 124,377.95 × 63,256.68
  4. Step 4: Simplify right side
    90,107.57x = 7,867,736,340.35
  5. Step 5: Solve for x
    x = 7,867,736,340.35/90,107.57
  6. Step 6: Final answer
    x = 87,314.93

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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.