Home / 87,807.31-131,711.74-21,247.52

Finding the Fourth Proportional to 87,807.31, 131,711.74 and 21,247.52

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Solution

The fourth proportional to 87,807.31, 131,711.74 and 21,247.52 is: 31,871.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,807.31 : 131,711.74 = 21,247.52 : x
  2. Step 2: Convert to fraction form
    87,807.31/131,711.74 = 21,247.52/x
  3. Step 3: Cross multiply
    87,807.31x = 131,711.74 × 21,247.52
  4. Step 4: Simplify right side
    87,807.31x = 2,798,547,118.21
  5. Step 5: Solve for x
    x = 2,798,547,118.21/87,807.31
  6. Step 6: Final answer
    x = 31,871.46

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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.