Home / 76,711.40-114,919.68-47,042.72

Finding the Fourth Proportional to 76,711.40, 114,919.68 and 47,042.72

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Solution

The fourth proportional to 76,711.40, 114,919.68 and 47,042.72 is: 70,473.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,711.40 : 114,919.68 = 47,042.72 : x
  2. Step 2: Convert to fraction form
    76,711.40/114,919.68 = 47,042.72/x
  3. Step 3: Cross multiply
    76,711.40x = 114,919.68 × 47,042.72
  4. Step 4: Simplify right side
    76,711.40x = 5,406,134,328.73
  5. Step 5: Solve for x
    x = 5,406,134,328.73/76,711.40
  6. Step 6: Final answer
    x = 70,473.68

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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.