Home / 81,217.65-112,114.91-49,396.77

Finding the Fourth Proportional to 81,217.65, 112,114.91 and 49,396.77

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Solution

The fourth proportional to 81,217.65, 112,114.91 and 49,396.77 is: 68,188.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,217.65 : 112,114.91 = 49,396.77 : x
  2. Step 2: Convert to fraction form
    81,217.65/112,114.91 = 49,396.77/x
  3. Step 3: Cross multiply
    81,217.65x = 112,114.91 × 49,396.77
  4. Step 4: Simplify right side
    81,217.65x = 5,538,114,175.86
  5. Step 5: Solve for x
    x = 5,538,114,175.86/81,217.65
  6. Step 6: Final answer
    x = 68,188.55

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.