Home / 90,711.02-125,182.69-49,876.87

Finding the Fourth Proportional to 90,711.02, 125,182.69 and 49,876.87

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Solution

The fourth proportional to 90,711.02, 125,182.69 and 49,876.87 is: 68,830.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,711.02 : 125,182.69 = 49,876.87 : x
  2. Step 2: Convert to fraction form
    90,711.02/125,182.69 = 49,876.87/x
  3. Step 3: Cross multiply
    90,711.02x = 125,182.69 × 49,876.87
  4. Step 4: Simplify right side
    90,711.02x = 6,243,720,129.47
  5. Step 5: Solve for x
    x = 6,243,720,129.47/90,711.02
  6. Step 6: Final answer
    x = 68,830.89

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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.