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Finding the Fourth Proportional to 68,203.52, 101,909.92 and 53,377.28

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Solution

The fourth proportional to 68,203.52, 101,909.92 and 53,377.28 is: 79,756.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,203.52 : 101,909.92 = 53,377.28 : x
  2. Step 2: Convert to fraction form
    68,203.52/101,909.92 = 53,377.28/x
  3. Step 3: Cross multiply
    68,203.52x = 101,909.92 × 53,377.28
  4. Step 4: Simplify right side
    68,203.52x = 5,439,674,334.62
  5. Step 5: Solve for x
    x = 5,439,674,334.62/68,203.52
  6. Step 6: Final answer
    x = 79,756.50

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.