Home / 87,990.48-132,008.40-31,078.80

Finding the Fourth Proportional to 87,990.48, 132,008.40 and 31,078.80

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Solution

The fourth proportional to 87,990.48, 132,008.40 and 31,078.80 is: 46,626.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,990.48 : 132,008.40 = 31,078.80 : x
  2. Step 2: Convert to fraction form
    87,990.48/132,008.40 = 31,078.80/x
  3. Step 3: Cross multiply
    87,990.48x = 132,008.40 × 31,078.80
  4. Step 4: Simplify right side
    87,990.48x = 4,102,662,661.92
  5. Step 5: Solve for x
    x = 4,102,662,661.92/87,990.48
  6. Step 6: Final answer
    x = 46,626.21

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.