Home / 80,876.32-121,327.40-34,136.08

Finding the Fourth Proportional to 80,876.32, 121,327.40 and 34,136.08

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Solution

The fourth proportional to 80,876.32, 121,327.40 and 34,136.08 is: 51,209.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,876.32 : 121,327.40 = 34,136.08 : x
  2. Step 2: Convert to fraction form
    80,876.32/121,327.40 = 34,136.08/x
  3. Step 3: Cross multiply
    80,876.32x = 121,327.40 × 34,136.08
  4. Step 4: Simplify right side
    80,876.32x = 4,141,641,832.59
  5. Step 5: Solve for x
    x = 4,141,641,832.59/80,876.32
  6. Step 6: Final answer
    x = 51,209.57

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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.