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Finding the Fourth Proportional to 79,698.88, 109,911.12 and 52,463.36

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Solution

The fourth proportional to 79,698.88, 109,911.12 and 52,463.36 is: 72,351.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,698.88 : 109,911.12 = 52,463.36 : x
  2. Step 2: Convert to fraction form
    79,698.88/109,911.12 = 52,463.36/x
  3. Step 3: Cross multiply
    79,698.88x = 109,911.12 × 52,463.36
  4. Step 4: Simplify right side
    79,698.88x = 5,766,306,656.56
  5. Step 5: Solve for x
    x = 5,766,306,656.56/79,698.88
  6. Step 6: Final answer
    x = 72,351.16

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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.