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Finding the Fourth Proportional to 52,878.12, 72,976.50 and 29,009.45

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Solution

The fourth proportional to 52,878.12, 72,976.50 and 29,009.45 is: 40,035.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,878.12 : 72,976.50 = 29,009.45 : x
  2. Step 2: Convert to fraction form
    52,878.12/72,976.50 = 29,009.45/x
  3. Step 3: Cross multiply
    52,878.12x = 72,976.50 × 29,009.45
  4. Step 4: Simplify right side
    52,878.12x = 2,117,007,763.04
  5. Step 5: Solve for x
    x = 2,117,007,763.04/52,878.12
  6. Step 6: Final answer
    x = 40,035.61

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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.