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Finding the Fourth Proportional to 56,469.20, 84,703.80 and 53,013.20

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Solution

The fourth proportional to 56,469.20, 84,703.80 and 53,013.20 is: 79,519.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,469.20 : 84,703.80 = 53,013.20 : x
  2. Step 2: Convert to fraction form
    56,469.20/84,703.80 = 53,013.20/x
  3. Step 3: Cross multiply
    56,469.20x = 84,703.80 × 53,013.20
  4. Step 4: Simplify right side
    56,469.20x = 4,490,419,490.16
  5. Step 5: Solve for x
    x = 4,490,419,490.16/56,469.20
  6. Step 6: Final answer
    x = 79,519.80

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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.