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Finding the Fourth Proportional to 90,262.70, 124,567.13 and 49,980.92

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Solution

The fourth proportional to 90,262.70, 124,567.13 and 49,980.92 is: 68,976.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,262.70 : 124,567.13 = 49,980.92 : x
  2. Step 2: Convert to fraction form
    90,262.70/124,567.13 = 49,980.92/x
  3. Step 3: Cross multiply
    90,262.70x = 124,567.13 × 49,980.92
  4. Step 4: Simplify right side
    90,262.70x = 6,225,979,759.16
  5. Step 5: Solve for x
    x = 6,225,979,759.16/90,262.70
  6. Step 6: Final answer
    x = 68,976.22

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1.5x scale

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.