Home / 87,644.51-120,695.10-76,154.26

Finding the Fourth Proportional to 87,644.51, 120,695.10 and 76,154.26

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Solution

The fourth proportional to 87,644.51, 120,695.10 and 76,154.26 is: 104,871.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,644.51 : 120,695.10 = 76,154.26 : x
  2. Step 2: Convert to fraction form
    87,644.51/120,695.10 = 76,154.26/x
  3. Step 3: Cross multiply
    87,644.51x = 120,695.10 × 76,154.26
  4. Step 4: Simplify right side
    87,644.51x = 9,191,445,422.65
  5. Step 5: Solve for x
    x = 9,191,445,422.65/87,644.51
  6. Step 6: Final answer
    x = 104,871.89

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.