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Finding the Fourth Proportional to 52,868.50, 72,951.87 and 28,988.89

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Solution

The fourth proportional to 52,868.50, 72,951.87 and 28,988.89 is: 40,001.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,868.50 : 72,951.87 = 28,988.89 : x
  2. Step 2: Convert to fraction form
    52,868.50/72,951.87 = 28,988.89/x
  3. Step 3: Cross multiply
    52,868.50x = 72,951.87 × 28,988.89
  4. Step 4: Simplify right side
    52,868.50x = 2,114,793,734.72
  5. Step 5: Solve for x
    x = 2,114,793,734.72/52,868.50
  6. Step 6: Final answer
    x = 40,001.02

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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.