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Finding the Fourth Proportional to 90,259.32, 124,562.43 and 49,974.78

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Solution

The fourth proportional to 90,259.32, 124,562.43 and 49,974.78 is: 68,967.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,259.32 : 124,562.43 = 49,974.78 : x
  2. Step 2: Convert to fraction form
    90,259.32/124,562.43 = 49,974.78/x
  3. Step 3: Cross multiply
    90,259.32x = 124,562.43 × 49,974.78
  4. Step 4: Simplify right side
    90,259.32x = 6,224,980,035.52
  5. Step 5: Solve for x
    x = 6,224,980,035.52/90,259.32
  6. Step 6: Final answer
    x = 68,967.73

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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.