Home / 87,247.72-130,910.46-45,685

Finding the Fourth Proportional to 87,247.72, 130,910.46 and 45,685

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Solution

The fourth proportional to 87,247.72, 130,910.46 and 45,685 is: 68,547.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,247.72 : 130,910.46 = 45,685 : x
  2. Step 2: Convert to fraction form
    87,247.72/130,910.46 = 45,685/x
  3. Step 3: Cross multiply
    87,247.72x = 130,910.46 × 45,685
  4. Step 4: Simplify right side
    87,247.72x = 5,980,644,365.10
  5. Step 5: Solve for x
    x = 5,980,644,365.10/87,247.72
  6. Step 6: Final answer
    x = 68,547.86

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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.