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Finding the Fourth Proportional to 52,755.28, 72,803.56 and 28,881.88

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Solution

The fourth proportional to 52,755.28, 72,803.56 and 28,881.88 is: 39,857.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,755.28 : 72,803.56 = 28,881.88 : x
  2. Step 2: Convert to fraction form
    52,755.28/72,803.56 = 28,881.88/x
  3. Step 3: Cross multiply
    52,755.28x = 72,803.56 × 28,881.88
  4. Step 4: Simplify right side
    52,755.28x = 2,102,703,683.49
  5. Step 5: Solve for x
    x = 2,102,703,683.49/52,755.28
  6. Step 6: Final answer
    x = 39,857.69

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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.