Home / 77,062.20-115,658.90-30,347.88

Finding the Fourth Proportional to 77,062.20, 115,658.90 and 30,347.88

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Solution

The fourth proportional to 77,062.20, 115,658.90 and 30,347.88 is: 45,547.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,062.20 : 115,658.90 = 30,347.88 : x
  2. Step 2: Convert to fraction form
    77,062.20/115,658.90 = 30,347.88/x
  3. Step 3: Cross multiply
    77,062.20x = 115,658.90 × 30,347.88
  4. Step 4: Simplify right side
    77,062.20x = 3,510,002,418.13
  5. Step 5: Solve for x
    x = 3,510,002,418.13/77,062.20
  6. Step 6: Final answer
    x = 45,547.65

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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.