Home / 81,113.16-121,676.88-28,523.04

Finding the Fourth Proportional to 81,113.16, 121,676.88 and 28,523.04

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Solution

The fourth proportional to 81,113.16, 121,676.88 and 28,523.04 is: 42,787.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,113.16 : 121,676.88 = 28,523.04 : x
  2. Step 2: Convert to fraction form
    81,113.16/121,676.88 = 28,523.04/x
  3. Step 3: Cross multiply
    81,113.16x = 121,676.88 × 28,523.04
  4. Step 4: Simplify right side
    81,113.16x = 3,470,594,515.32
  5. Step 5: Solve for x
    x = 3,470,594,515.32/81,113.16
  6. Step 6: Final answer
    x = 42,787.07

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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.