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Finding the Fourth Proportional to 86,791.60, 119,752.96 and 52,817.84

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Solution

The fourth proportional to 86,791.60, 119,752.96 and 52,817.84 is: 72,876.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,791.60 : 119,752.96 = 52,817.84 : x
  2. Step 2: Convert to fraction form
    86,791.60/119,752.96 = 52,817.84/x
  3. Step 3: Cross multiply
    86,791.60x = 119,752.96 × 52,817.84
  4. Step 4: Simplify right side
    86,791.60x = 6,325,092,680.81
  5. Step 5: Solve for x
    x = 6,325,092,680.81/86,791.60
  6. Step 6: Final answer
    x = 72,876.78

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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.