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Finding the Fourth Proportional to 40,429.80, 60,644.70 and 12,727.80

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Solution

The fourth proportional to 40,429.80, 60,644.70 and 12,727.80 is: 19,091.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,429.80 : 60,644.70 = 12,727.80 : x
  2. Step 2: Convert to fraction form
    40,429.80/60,644.70 = 12,727.80/x
  3. Step 3: Cross multiply
    40,429.80x = 60,644.70 × 12,727.80
  4. Step 4: Simplify right side
    40,429.80x = 771,873,612.66
  5. Step 5: Solve for x
    x = 771,873,612.66/40,429.80
  6. Step 6: Final answer
    x = 19,091.70

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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.