Home / 90,125.10-124,370.40-49,837.80

Finding the Fourth Proportional to 90,125.10, 124,370.40 and 49,837.80

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Solution

The fourth proportional to 90,125.10, 124,370.40 and 49,837.80 is: 68,774.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,125.10 : 124,370.40 = 49,837.80 : x
  2. Step 2: Convert to fraction form
    90,125.10/124,370.40 = 49,837.80/x
  3. Step 3: Cross multiply
    90,125.10x = 124,370.40 × 49,837.80
  4. Step 4: Simplify right side
    90,125.10x = 6,198,347,121.12
  5. Step 5: Solve for x
    x = 6,198,347,121.12/90,125.10
  6. Step 6: Final answer
    x = 68,774.93

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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.