Home / 76,691.47-105,817.96-48,380.75

Finding the Fourth Proportional to 76,691.47, 105,817.96 and 48,380.75

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Solution

The fourth proportional to 76,691.47, 105,817.96 and 48,380.75 is: 66,755.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,691.47 : 105,817.96 = 48,380.75 : x
  2. Step 2: Convert to fraction form
    76,691.47/105,817.96 = 48,380.75/x
  3. Step 3: Cross multiply
    76,691.47x = 105,817.96 × 48,380.75
  4. Step 4: Simplify right side
    76,691.47x = 5,119,552,268.27
  5. Step 5: Solve for x
    x = 5,119,552,268.27/76,691.47
  6. Step 6: Final answer
    x = 66,755.17

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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.