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Finding the Fourth Proportional to 72,214.60, 108,321.90 and 54,718.60

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Solution

The fourth proportional to 72,214.60, 108,321.90 and 54,718.60 is: 82,077.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,214.60 : 108,321.90 = 54,718.60 : x
  2. Step 2: Convert to fraction form
    72,214.60/108,321.90 = 54,718.60/x
  3. Step 3: Cross multiply
    72,214.60x = 108,321.90 × 54,718.60
  4. Step 4: Simplify right side
    72,214.60x = 5,927,222,717.34
  5. Step 5: Solve for x
    x = 5,927,222,717.34/72,214.60
  6. Step 6: Final answer
    x = 82,077.90

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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.