Home / 87,985.74-121,375.77-55,666.14

Finding the Fourth Proportional to 87,985.74, 121,375.77 and 55,666.14

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Solution

The fourth proportional to 87,985.74, 121,375.77 and 55,666.14 is: 76,791.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,985.74 : 121,375.77 = 55,666.14 : x
  2. Step 2: Convert to fraction form
    87,985.74/121,375.77 = 55,666.14/x
  3. Step 3: Cross multiply
    87,985.74x = 121,375.77 × 55,666.14
  4. Step 4: Simplify right side
    87,985.74x = 6,756,519,941.52
  5. Step 5: Solve for x
    x = 6,756,519,941.52/87,985.74
  6. Step 6: Final answer
    x = 76,791.08

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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.