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Finding the Fourth Proportional to 52,671.90, 78,892.65 and 40,892.70

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Solution

The fourth proportional to 52,671.90, 78,892.65 and 40,892.70 is: 61,249.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,671.90 : 78,892.65 = 40,892.70 : x
  2. Step 2: Convert to fraction form
    52,671.90/78,892.65 = 40,892.70/x
  3. Step 3: Cross multiply
    52,671.90x = 78,892.65 × 40,892.70
  4. Step 4: Simplify right side
    52,671.90x = 3,226,133,468.66
  5. Step 5: Solve for x
    x = 3,226,133,468.66/52,671.90
  6. Step 6: Final answer
    x = 61,249.61

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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.