Home / 76,278.36-105,306.05-52,115.66

Finding the Fourth Proportional to 76,278.36, 105,306.05 and 52,115.66

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Solution

The fourth proportional to 76,278.36, 105,306.05 and 52,115.66 is: 71,948.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,278.36 : 105,306.05 = 52,115.66 : x
  2. Step 2: Convert to fraction form
    76,278.36/105,306.05 = 52,115.66/x
  3. Step 3: Cross multiply
    76,278.36x = 105,306.05 × 52,115.66
  4. Step 4: Simplify right side
    76,278.36x = 5,488,093,510.63
  5. Step 5: Solve for x
    x = 5,488,093,510.63/76,278.36
  6. Step 6: Final answer
    x = 71,948.24

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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.