Home / 77,053.12-115,529.76-30,310.72

Finding the Fourth Proportional to 77,053.12, 115,529.76 and 30,310.72

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Solution

The fourth proportional to 77,053.12, 115,529.76 and 30,310.72 is: 45,446.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,053.12 : 115,529.76 = 30,310.72 : x
  2. Step 2: Convert to fraction form
    77,053.12/115,529.76 = 30,310.72/x
  3. Step 3: Cross multiply
    77,053.12x = 115,529.76 × 30,310.72
  4. Step 4: Simplify right side
    77,053.12x = 3,501,790,207.03
  5. Step 5: Solve for x
    x = 3,501,790,207.03/77,053.12
  6. Step 6: Final answer
    x = 45,446.44

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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.