Home / 87,812.76-121,151.75-49,567.80

Finding the Fourth Proportional to 87,812.76, 121,151.75 and 49,567.80

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Solution

The fourth proportional to 87,812.76, 121,151.75 and 49,567.80 is: 68,386.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,812.76 : 121,151.75 = 49,567.80 : x
  2. Step 2: Convert to fraction form
    87,812.76/121,151.75 = 49,567.80/x
  3. Step 3: Cross multiply
    87,812.76x = 121,151.75 × 49,567.80
  4. Step 4: Simplify right side
    87,812.76x = 6,005,225,713.65
  5. Step 5: Solve for x
    x = 6,005,225,713.65/87,812.76
  6. Step 6: Final answer
    x = 68,386.71

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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.