Home / 90,042.50-124,255.32-49,755.43

Finding the Fourth Proportional to 90,042.50, 124,255.32 and 49,755.43

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Solution

The fourth proportional to 90,042.50, 124,255.32 and 49,755.43 is: 68,660.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,042.50 : 124,255.32 = 49,755.43 : x
  2. Step 2: Convert to fraction form
    90,042.50/124,255.32 = 49,755.43/x
  3. Step 3: Cross multiply
    90,042.50x = 124,255.32 × 49,755.43
  4. Step 4: Simplify right side
    90,042.50x = 6,182,376,845.12
  5. Step 5: Solve for x
    x = 6,182,376,845.12/90,042.50
  6. Step 6: Final answer
    x = 68,660.65

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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.