Home / 76,764.38-115,134.02-54,510.44

Finding the Fourth Proportional to 76,764.38, 115,134.02 and 54,510.44

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Solution

The fourth proportional to 76,764.38, 115,134.02 and 54,510.44 is: 81,756.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,764.38 : 115,134.02 = 54,510.44 : x
  2. Step 2: Convert to fraction form
    76,764.38/115,134.02 = 54,510.44/x
  3. Step 3: Cross multiply
    76,764.38x = 115,134.02 × 54,510.44
  4. Step 4: Simplify right side
    76,764.38x = 6,276,006,089.17
  5. Step 5: Solve for x
    x = 6,276,006,089.17/76,764.38
  6. Step 6: Final answer
    x = 81,756.75

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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.