Home / 87,711.60-121,014.38-53,684.62

Finding the Fourth Proportional to 87,711.60, 121,014.38 and 53,684.62

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Solution

The fourth proportional to 87,711.60, 121,014.38 and 53,684.62 is: 74,067.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,711.60 : 121,014.38 = 53,684.62 : x
  2. Step 2: Convert to fraction form
    87,711.60/121,014.38 = 53,684.62/x
  3. Step 3: Cross multiply
    87,711.60x = 121,014.38 × 53,684.62
  4. Step 4: Simplify right side
    87,711.60x = 6,496,611,004.84
  5. Step 5: Solve for x
    x = 6,496,611,004.84/87,711.60
  6. Step 6: Final answer
    x = 74,067.87

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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.