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Finding the Fourth Proportional to 40,444, 55,818.48 and 38,672.80

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Solution

The fourth proportional to 40,444, 55,818.48 and 38,672.80 is: 53,373.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,444 : 55,818.48 = 38,672.80 : x
  2. Step 2: Convert to fraction form
    40,444/55,818.48 = 38,672.80/x
  3. Step 3: Cross multiply
    40,444x = 55,818.48 × 38,672.80
  4. Step 4: Simplify right side
    40,444x = 2,158,656,913.34
  5. Step 5: Solve for x
    x = 2,158,656,913.34/40,444
  6. Step 6: Final answer
    x = 53,373.97

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.