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Finding the Fourth Proportional to 51,343.92, 70,855.56 and 28,987.92

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Solution

The fourth proportional to 51,343.92, 70,855.56 and 28,987.92 is: 40,003.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,343.92 : 70,855.56 = 28,987.92 : x
  2. Step 2: Convert to fraction form
    51,343.92/70,855.56 = 28,987.92/x
  3. Step 3: Cross multiply
    51,343.92x = 70,855.56 × 28,987.92
  4. Step 4: Simplify right side
    51,343.92x = 2,053,955,304.84
  5. Step 5: Solve for x
    x = 2,053,955,304.84/51,343.92
  6. Step 6: Final answer
    x = 40,003.87

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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.