Home / 77,211.15-115,836.70-45,217.24

Finding the Fourth Proportional to 77,211.15, 115,836.70 and 45,217.24

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Solution

The fourth proportional to 77,211.15, 115,836.70 and 45,217.24 is: 67,837.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,211.15 : 115,836.70 = 45,217.24 : x
  2. Step 2: Convert to fraction form
    77,211.15/115,836.70 = 45,217.24/x
  3. Step 3: Cross multiply
    77,211.15x = 115,836.70 × 45,217.24
  4. Step 4: Simplify right side
    77,211.15x = 5,237,815,864.71
  5. Step 5: Solve for x
    x = 5,237,815,864.71/77,211.15
  6. Step 6: Final answer
    x = 67,837.56

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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.