Home / 80,798.15-121,120.54-28,193.51

Finding the Fourth Proportional to 80,798.15, 121,120.54 and 28,193.51

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Solution

The fourth proportional to 80,798.15, 121,120.54 and 28,193.51 is: 42,263.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,798.15 : 121,120.54 = 28,193.51 : x
  2. Step 2: Convert to fraction form
    80,798.15/121,120.54 = 28,193.51/x
  3. Step 3: Cross multiply
    80,798.15x = 121,120.54 × 28,193.51
  4. Step 4: Simplify right side
    80,798.15x = 3,414,813,155.70
  5. Step 5: Solve for x
    x = 3,414,813,155.70/80,798.15
  6. Step 6: Final answer
    x = 42,263.51

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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.