Home / 51,842.10-77,763.15-20,699.70

Finding the Fourth Proportional to 51,842.10, 77,763.15 and 20,699.70

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Solution

The fourth proportional to 51,842.10, 77,763.15 and 20,699.70 is: 31,049.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,842.10 : 77,763.15 = 20,699.70 : x
  2. Step 2: Convert to fraction form
    51,842.10/77,763.15 = 20,699.70/x
  3. Step 3: Cross multiply
    51,842.10x = 77,763.15 × 20,699.70
  4. Step 4: Simplify right side
    51,842.10x = 1,609,673,876.06
  5. Step 5: Solve for x
    x = 1,609,673,876.06/51,842.10
  6. Step 6: Final answer
    x = 31,049.55

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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.