Home / 90,125.40-124,370.70-49,838.04

Finding the Fourth Proportional to 90,125.40, 124,370.70 and 49,838.04

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Solution

The fourth proportional to 90,125.40, 124,370.70 and 49,838.04 is: 68,775.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,125.40 : 124,370.70 = 49,838.04 : x
  2. Step 2: Convert to fraction form
    90,125.40/124,370.70 = 49,838.04/x
  3. Step 3: Cross multiply
    90,125.40x = 124,370.70 × 49,838.04
  4. Step 4: Simplify right side
    90,125.40x = 6,198,391,921.43
  5. Step 5: Solve for x
    x = 6,198,391,921.43/90,125.40
  6. Step 6: Final answer
    x = 68,775.19

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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.