Home / 80,877.84-121,345.80-28,295.04

Finding the Fourth Proportional to 80,877.84, 121,345.80 and 28,295.04

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Solution

The fourth proportional to 80,877.84, 121,345.80 and 28,295.04 is: 42,452.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,877.84 : 121,345.80 = 28,295.04 : x
  2. Step 2: Convert to fraction form
    80,877.84/121,345.80 = 28,295.04/x
  3. Step 3: Cross multiply
    80,877.84x = 121,345.80 × 28,295.04
  4. Step 4: Simplify right side
    80,877.84x = 3,433,484,264.83
  5. Step 5: Solve for x
    x = 3,433,484,264.83/80,877.84
  6. Step 6: Final answer
    x = 42,452.72

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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.