Home / 87,498.74-120,747.21-49,772.90

Finding the Fourth Proportional to 87,498.74, 120,747.21 and 49,772.90

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Solution

The fourth proportional to 87,498.74, 120,747.21 and 49,772.90 is: 68,686.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,498.74 : 120,747.21 = 49,772.90 : x
  2. Step 2: Convert to fraction form
    87,498.74/120,747.21 = 49,772.90/x
  3. Step 3: Cross multiply
    87,498.74x = 120,747.21 × 49,772.90
  4. Step 4: Simplify right side
    87,498.74x = 6,009,938,808.61
  5. Step 5: Solve for x
    x = 6,009,938,808.61/87,498.74
  6. Step 6: Final answer
    x = 68,686.00

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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.