Home / 87,585.85-120,868.47-47,299.61

Finding the Fourth Proportional to 87,585.85, 120,868.47 and 47,299.61

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Solution

The fourth proportional to 87,585.85, 120,868.47 and 47,299.61 is: 65,273.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,585.85 : 120,868.47 = 47,299.61 : x
  2. Step 2: Convert to fraction form
    87,585.85/120,868.47 = 47,299.61/x
  3. Step 3: Cross multiply
    87,585.85x = 120,868.47 × 47,299.61
  4. Step 4: Simplify right side
    87,585.85x = 5,717,031,492.30
  5. Step 5: Solve for x
    x = 5,717,031,492.30/87,585.85
  6. Step 6: Final answer
    x = 65,273.46

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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.