Home / 77,073.72-115,319.87-45,500.95

Finding the Fourth Proportional to 77,073.72, 115,319.87 and 45,500.95

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Solution

The fourth proportional to 77,073.72, 115,319.87 and 45,500.95 is: 68,079.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,073.72 : 115,319.87 = 45,500.95 : x
  2. Step 2: Convert to fraction form
    77,073.72/115,319.87 = 45,500.95/x
  3. Step 3: Cross multiply
    77,073.72x = 115,319.87 × 45,500.95
  4. Step 4: Simplify right side
    77,073.72x = 5,247,163,638.88
  5. Step 5: Solve for x
    x = 5,247,163,638.88/77,073.72
  6. Step 6: Final answer
    x = 68,079.80

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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.