Home / 40,727.60-61,100.96-12,646.20

Finding the Fourth Proportional to 40,727.60, 61,100.96 and 12,646.20

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Solution

The fourth proportional to 40,727.60, 61,100.96 and 12,646.20 is: 18,972.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,727.60 : 61,100.96 = 12,646.20 : x
  2. Step 2: Convert to fraction form
    40,727.60/61,100.96 = 12,646.20/x
  3. Step 3: Cross multiply
    40,727.60x = 61,100.96 × 12,646.20
  4. Step 4: Simplify right side
    40,727.60x = 772,694,960.35
  5. Step 5: Solve for x
    x = 772,694,960.35/40,727.60
  6. Step 6: Final answer
    x = 18,972.27

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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.