Home / 78,787.90-108,751.56-48,582.70

Finding the Fourth Proportional to 78,787.90, 108,751.56 and 48,582.70

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Solution

The fourth proportional to 78,787.90, 108,751.56 and 48,582.70 is: 67,059.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,787.90 : 108,751.56 = 48,582.70 : x
  2. Step 2: Convert to fraction form
    78,787.90/108,751.56 = 48,582.70/x
  3. Step 3: Cross multiply
    78,787.90x = 108,751.56 × 48,582.70
  4. Step 4: Simplify right side
    78,787.90x = 5,283,444,414.01
  5. Step 5: Solve for x
    x = 5,283,444,414.01/78,787.90
  6. Step 6: Final answer
    x = 67,059.08

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.