Home / 87,765.53-121,116.29-47,479.17

Finding the Fourth Proportional to 87,765.53, 121,116.29 and 47,479.17

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Solution

The fourth proportional to 87,765.53, 121,116.29 and 47,479.17 is: 65,521.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,765.53 : 121,116.29 = 47,479.17 : x
  2. Step 2: Convert to fraction form
    87,765.53/121,116.29 = 47,479.17/x
  3. Step 3: Cross multiply
    87,765.53x = 121,116.29 × 47,479.17
  4. Step 4: Simplify right side
    87,765.53x = 5,750,500,685.28
  5. Step 5: Solve for x
    x = 5,750,500,685.28/87,765.53
  6. Step 6: Final answer
    x = 65,521.17

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1.5x scale

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.