Home / 87,401.97-120,634.65-61,881.84

Finding the Fourth Proportional to 87,401.97, 120,634.65 and 61,881.84

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Solution

The fourth proportional to 87,401.97, 120,634.65 and 61,881.84 is: 85,411.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,401.97 : 120,634.65 = 61,881.84 : x
  2. Step 2: Convert to fraction form
    87,401.97/120,634.65 = 61,881.84/x
  3. Step 3: Cross multiply
    87,401.97x = 120,634.65 × 61,881.84
  4. Step 4: Simplify right side
    87,401.97x = 7,465,094,109.76
  5. Step 5: Solve for x
    x = 7,465,094,109.76/87,401.97
  6. Step 6: Final answer
    x = 85,411.05

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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.