Home / 90,138.55-124,386.16-49,294.61

Finding the Fourth Proportional to 90,138.55, 124,386.16 and 49,294.61

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Solution

The fourth proportional to 90,138.55, 124,386.16 and 49,294.61 is: 68,023.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,138.55 : 124,386.16 = 49,294.61 : x
  2. Step 2: Convert to fraction form
    90,138.55/124,386.16 = 49,294.61/x
  3. Step 3: Cross multiply
    90,138.55x = 124,386.16 × 49,294.61
  4. Step 4: Simplify right side
    90,138.55x = 6,131,567,246.60
  5. Step 5: Solve for x
    x = 6,131,567,246.60/90,138.55
  6. Step 6: Final answer
    x = 68,023.81

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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.