Home / 87,080.13-130,678.45-31,676.13

Finding the Fourth Proportional to 87,080.13, 130,678.45 and 31,676.13

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Solution

The fourth proportional to 87,080.13, 130,678.45 and 31,676.13 is: 47,535.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,080.13 : 130,678.45 = 31,676.13 : x
  2. Step 2: Convert to fraction form
    87,080.13/130,678.45 = 31,676.13/x
  3. Step 3: Cross multiply
    87,080.13x = 130,678.45 × 31,676.13
  4. Step 4: Simplify right side
    87,080.13x = 4,139,387,491.21
  5. Step 5: Solve for x
    x = 4,139,387,491.21/87,080.13
  6. Step 6: Final answer
    x = 47,535.38

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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.