Home / 87,854.06-121,231.15-51,551.76

Finding the Fourth Proportional to 87,854.06, 121,231.15 and 51,551.76

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Solution

The fourth proportional to 87,854.06, 121,231.15 and 51,551.76 is: 71,137.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,854.06 : 121,231.15 = 51,551.76 : x
  2. Step 2: Convert to fraction form
    87,854.06/121,231.15 = 51,551.76/x
  3. Step 3: Cross multiply
    87,854.06x = 121,231.15 × 51,551.76
  4. Step 4: Simplify right side
    87,854.06x = 6,249,678,975.13
  5. Step 5: Solve for x
    x = 6,249,678,975.13/87,854.06
  6. Step 6: Final answer
    x = 71,137.05

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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.