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Finding the Fourth Proportional to 52,789.48, 72,849.48 and 28,916.22

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Solution

The fourth proportional to 52,789.48, 72,849.48 and 28,916.22 is: 39,904.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,789.48 : 72,849.48 = 28,916.22 : x
  2. Step 2: Convert to fraction form
    52,789.48/72,849.48 = 28,916.22/x
  3. Step 3: Cross multiply
    52,789.48x = 72,849.48 × 28,916.22
  4. Step 4: Simplify right side
    52,789.48x = 2,106,531,590.57
  5. Step 5: Solve for x
    x = 2,106,531,590.57/52,789.48
  6. Step 6: Final answer
    x = 39,904.38

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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.