Home / 87,308.02-120,480.45-49,069.06

Finding the Fourth Proportional to 87,308.02, 120,480.45 and 49,069.06

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Solution

The fourth proportional to 87,308.02, 120,480.45 and 49,069.06 is: 67,712.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,308.02 : 120,480.45 = 49,069.06 : x
  2. Step 2: Convert to fraction form
    87,308.02/120,480.45 = 49,069.06/x
  3. Step 3: Cross multiply
    87,308.02x = 120,480.45 × 49,069.06
  4. Step 4: Simplify right side
    87,308.02x = 5,911,862,429.88
  5. Step 5: Solve for x
    x = 5,911,862,429.88/87,308.02
  6. Step 6: Final answer
    x = 67,712.71

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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.