Home / 87,985.38-121,391.28-49,741.23

Finding the Fourth Proportional to 87,985.38, 121,391.28 and 49,741.23

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Solution

The fourth proportional to 87,985.38, 121,391.28 and 49,741.23 is: 68,626.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,985.38 : 121,391.28 = 49,741.23 : x
  2. Step 2: Convert to fraction form
    87,985.38/121,391.28 = 49,741.23/x
  3. Step 3: Cross multiply
    87,985.38x = 121,391.28 × 49,741.23
  4. Step 4: Simplify right side
    87,985.38x = 6,038,151,578.47
  5. Step 5: Solve for x
    x = 6,038,151,578.47/87,985.38
  6. Step 6: Final answer
    x = 68,626.76

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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.