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Finding the Fourth Proportional to 52,718.78, 72,753.09 and 28,845.45

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Solution

The fourth proportional to 52,718.78, 72,753.09 and 28,845.45 is: 39,807.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,718.78 : 72,753.09 = 28,845.45 : x
  2. Step 2: Convert to fraction form
    52,718.78/72,753.09 = 28,845.45/x
  3. Step 3: Cross multiply
    52,718.78x = 72,753.09 × 28,845.45
  4. Step 4: Simplify right side
    52,718.78x = 2,098,595,511.77
  5. Step 5: Solve for x
    x = 2,098,595,511.77/52,718.78
  6. Step 6: Final answer
    x = 39,807.36

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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.