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Finding the Fourth Proportional to 52,500.78, 78,663.52 and 36,890.46

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Solution

The fourth proportional to 52,500.78, 78,663.52 and 36,890.46 is: 55,274.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,500.78 : 78,663.52 = 36,890.46 : x
  2. Step 2: Convert to fraction form
    52,500.78/78,663.52 = 36,890.46/x
  3. Step 3: Cross multiply
    52,500.78x = 78,663.52 × 36,890.46
  4. Step 4: Simplify right side
    52,500.78x = 2,901,933,438.02
  5. Step 5: Solve for x
    x = 2,901,933,438.02/52,500.78
  6. Step 6: Final answer
    x = 55,274.10

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.