Home / 75,128.85-112,651.16-51,463.11

Finding the Fourth Proportional to 75,128.85, 112,651.16 and 51,463.11

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Solution

The fourth proportional to 75,128.85, 112,651.16 and 51,463.11 is: 77,165.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,128.85 : 112,651.16 = 51,463.11 : x
  2. Step 2: Convert to fraction form
    75,128.85/112,651.16 = 51,463.11/x
  3. Step 3: Cross multiply
    75,128.85x = 112,651.16 × 51,463.11
  4. Step 4: Simplify right side
    75,128.85x = 5,797,379,203.83
  5. Step 5: Solve for x
    x = 5,797,379,203.83/75,128.85
  6. Step 6: Final answer
    x = 77,165.82

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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.