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Finding the Fourth Proportional to 67,872.40, 101,743.80 and 52,871.20

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Solution

The fourth proportional to 67,872.40, 101,743.80 and 52,871.20 is: 79,256.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,872.40 : 101,743.80 = 52,871.20 : x
  2. Step 2: Convert to fraction form
    67,872.40/101,743.80 = 52,871.20/x
  3. Step 3: Cross multiply
    67,872.40x = 101,743.80 × 52,871.20
  4. Step 4: Simplify right side
    67,872.40x = 5,379,316,798.56
  5. Step 5: Solve for x
    x = 5,379,316,798.56/67,872.40
  6. Step 6: Final answer
    x = 79,256.32

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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.