Home / 87,765.82-121,117.13-47,479.75

Finding the Fourth Proportional to 87,765.82, 121,117.13 and 47,479.75

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Solution

The fourth proportional to 87,765.82, 121,117.13 and 47,479.75 is: 65,522.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,765.82 : 121,117.13 = 47,479.75 : x
  2. Step 2: Convert to fraction form
    87,765.82/121,117.13 = 47,479.75/x
  3. Step 3: Cross multiply
    87,765.82x = 121,117.13 × 47,479.75
  4. Step 4: Simplify right side
    87,765.82x = 5,750,611,053.12
  5. Step 5: Solve for x
    x = 5,750,611,053.12/87,765.82
  6. Step 6: Final answer
    x = 65,522.22

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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.