Home / 81,100.76-111,914.40-48,432.04

Finding the Fourth Proportional to 81,100.76, 111,914.40 and 48,432.04

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Solution

The fourth proportional to 81,100.76, 111,914.40 and 48,432.04 is: 66,833.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,100.76 : 111,914.40 = 48,432.04 : x
  2. Step 2: Convert to fraction form
    81,100.76/111,914.40 = 48,432.04/x
  3. Step 3: Cross multiply
    81,100.76x = 111,914.40 × 48,432.04
  4. Step 4: Simplify right side
    81,100.76x = 5,420,242,697.38
  5. Step 5: Solve for x
    x = 5,420,242,697.38/81,100.76
  6. Step 6: Final answer
    x = 66,833.44

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1.5x scale

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.