Home / 87,043.23-130,389.89-45,402.75

Finding the Fourth Proportional to 87,043.23, 130,389.89 and 45,402.75

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Solution

The fourth proportional to 87,043.23, 130,389.89 and 45,402.75 is: 68,012.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,043.23 : 130,389.89 = 45,402.75 : x
  2. Step 2: Convert to fraction form
    87,043.23/130,389.89 = 45,402.75/x
  3. Step 3: Cross multiply
    87,043.23x = 130,389.89 × 45,402.75
  4. Step 4: Simplify right side
    87,043.23x = 5,920,059,351.18
  5. Step 5: Solve for x
    x = 5,920,059,351.18/87,043.23
  6. Step 6: Final answer
    x = 68,012.86

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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.