Home / 77,002.12-115,310.40-48,836.80

Finding the Fourth Proportional to 77,002.12, 115,310.40 and 48,836.80

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Solution

The fourth proportional to 77,002.12, 115,310.40 and 48,836.80 is: 73,132.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,002.12 : 115,310.40 = 48,836.80 : x
  2. Step 2: Convert to fraction form
    77,002.12/115,310.40 = 48,836.80/x
  3. Step 3: Cross multiply
    77,002.12x = 115,310.40 × 48,836.80
  4. Step 4: Simplify right side
    77,002.12x = 5,631,390,942.72
  5. Step 5: Solve for x
    x = 5,631,390,942.72/77,002.12
  6. Step 6: Final answer
    x = 73,132.93

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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.