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Finding the Fourth Proportional to 73,212.60, 109,818.90 and 17,808.60

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Solution

The fourth proportional to 73,212.60, 109,818.90 and 17,808.60 is: 26,712.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,212.60 : 109,818.90 = 17,808.60 : x
  2. Step 2: Convert to fraction form
    73,212.60/109,818.90 = 17,808.60/x
  3. Step 3: Cross multiply
    73,212.60x = 109,818.90 × 17,808.60
  4. Step 4: Simplify right side
    73,212.60x = 1,955,720,862.54
  5. Step 5: Solve for x
    x = 1,955,720,862.54/73,212.60
  6. Step 6: Final answer
    x = 26,712.90

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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.