Home / 101,579.74-140,176.17-55,638.65

Finding the Fourth Proportional to 101,579.74, 140,176.17 and 55,638.65

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Solution

The fourth proportional to 101,579.74, 140,176.17 and 55,638.65 is: 76,779.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,579.74 : 140,176.17 = 55,638.65 : x
  2. Step 2: Convert to fraction form
    101,579.74/140,176.17 = 55,638.65/x
  3. Step 3: Cross multiply
    101,579.74x = 140,176.17 × 55,638.65
  4. Step 4: Simplify right side
    101,579.74x = 7,799,212,860.97
  5. Step 5: Solve for x
    x = 7,799,212,860.97/101,579.74
  6. Step 6: Final answer
    x = 76,779.22

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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.