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Finding the Fourth Proportional to 56,642.88, 78,173.28 and 32,769.12

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Solution

The fourth proportional to 56,642.88, 78,173.28 and 32,769.12 is: 45,224.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,642.88 : 78,173.28 = 32,769.12 : x
  2. Step 2: Convert to fraction form
    56,642.88/78,173.28 = 32,769.12/x
  3. Step 3: Cross multiply
    56,642.88x = 78,173.28 × 32,769.12
  4. Step 4: Simplify right side
    56,642.88x = 2,561,669,593.11
  5. Step 5: Solve for x
    x = 2,561,669,593.11/56,642.88
  6. Step 6: Final answer
    x = 45,224.92

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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.