Home / 87,090.42-130,693.77-31,686.42

Finding the Fourth Proportional to 87,090.42, 130,693.77 and 31,686.42

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Solution

The fourth proportional to 87,090.42, 130,693.77 and 31,686.42 is: 47,550.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,090.42 : 130,693.77 = 31,686.42 : x
  2. Step 2: Convert to fraction form
    87,090.42/130,693.77 = 31,686.42/x
  3. Step 3: Cross multiply
    87,090.42x = 130,693.77 × 31,686.42
  4. Step 4: Simplify right side
    87,090.42x = 4,141,217,687.60
  5. Step 5: Solve for x
    x = 4,141,217,687.60/87,090.42
  6. Step 6: Final answer
    x = 47,550.78

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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.