Home / 87,090.76-130,694.39-31,686.76

Finding the Fourth Proportional to 87,090.76, 130,694.39 and 31,686.76

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Solution

The fourth proportional to 87,090.76, 130,694.39 and 31,686.76 is: 47,551.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,090.76 : 130,694.39 = 31,686.76 : x
  2. Step 2: Convert to fraction form
    87,090.76/130,694.39 = 31,686.76/x
  3. Step 3: Cross multiply
    87,090.76x = 130,694.39 × 31,686.76
  4. Step 4: Simplify right side
    87,090.76x = 4,141,280,957.37
  5. Step 5: Solve for x
    x = 4,141,280,957.37/87,090.76
  6. Step 6: Final answer
    x = 47,551.33

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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.