Home / 76,701.12-115,209.12-50,443.20

Finding the Fourth Proportional to 76,701.12, 115,209.12 and 50,443.20

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Solution

The fourth proportional to 76,701.12, 115,209.12 and 50,443.20 is: 75,768.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,701.12 : 115,209.12 = 50,443.20 : x
  2. Step 2: Convert to fraction form
    76,701.12/115,209.12 = 50,443.20/x
  3. Step 3: Cross multiply
    76,701.12x = 115,209.12 × 50,443.20
  4. Step 4: Simplify right side
    76,701.12x = 5,811,516,681.98
  5. Step 5: Solve for x
    x = 5,811,516,681.98/76,701.12
  6. Step 6: Final answer
    x = 75,768.34

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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.