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Finding the Fourth Proportional to 81,463.60, 122,118.78 and 43,967.48

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Solution

The fourth proportional to 81,463.60, 122,118.78 and 43,967.48 is: 65,909.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,463.60 : 122,118.78 = 43,967.48 : x
  2. Step 2: Convert to fraction form
    81,463.60/122,118.78 = 43,967.48/x
  3. Step 3: Cross multiply
    81,463.60x = 122,118.78 × 43,967.48
  4. Step 4: Simplify right side
    81,463.60x = 5,369,255,017.27
  5. Step 5: Solve for x
    x = 5,369,255,017.27/81,463.60
  6. Step 6: Final answer
    x = 65,909.87

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1.5x scale

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.