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Finding the Fourth Proportional to 52,661.28, 72,672.48 and 28,788

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Solution

The fourth proportional to 52,661.28, 72,672.48 and 28,788 is: 39,727.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,661.28 : 72,672.48 = 28,788 : x
  2. Step 2: Convert to fraction form
    52,661.28/72,672.48 = 28,788/x
  3. Step 3: Cross multiply
    52,661.28x = 72,672.48 × 28,788
  4. Step 4: Simplify right side
    52,661.28x = 2,092,095,354.24
  5. Step 5: Solve for x
    x = 2,092,095,354.24/52,661.28
  6. Step 6: Final answer
    x = 39,727.39

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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.