Home / 80,872.65-121,308.98-49,725.45

Finding the Fourth Proportional to 80,872.65, 121,308.98 and 49,725.45

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Solution

The fourth proportional to 80,872.65, 121,308.98 and 49,725.45 is: 74,588.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,872.65 : 121,308.98 = 49,725.45 : x
  2. Step 2: Convert to fraction form
    80,872.65/121,308.98 = 49,725.45/x
  3. Step 3: Cross multiply
    80,872.65x = 121,308.98 × 49,725.45
  4. Step 4: Simplify right side
    80,872.65x = 6,032,143,370.91
  5. Step 5: Solve for x
    x = 6,032,143,370.91/80,872.65
  6. Step 6: Final answer
    x = 74,588.18

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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.