Home / 76,715.15-115,072.50-34,545.86

Finding the Fourth Proportional to 76,715.15, 115,072.50 and 34,545.86

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Solution

The fourth proportional to 76,715.15, 115,072.50 and 34,545.86 is: 51,818.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,715.15 : 115,072.50 = 34,545.86 : x
  2. Step 2: Convert to fraction form
    76,715.15/115,072.50 = 34,545.86/x
  3. Step 3: Cross multiply
    76,715.15x = 115,072.50 × 34,545.86
  4. Step 4: Simplify right side
    76,715.15x = 3,975,278,266.24
  5. Step 5: Solve for x
    x = 3,975,278,266.24/76,715.15
  6. Step 6: Final answer
    x = 51,818.69

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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.