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Finding the Fourth Proportional to 52,637, 72,639.06 and 30,281

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Solution

The fourth proportional to 52,637, 72,639.06 and 30,281 is: 41,787.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,637 : 72,639.06 = 30,281 : x
  2. Step 2: Convert to fraction form
    52,637/72,639.06 = 30,281/x
  3. Step 3: Cross multiply
    52,637x = 72,639.06 × 30,281
  4. Step 4: Simplify right side
    52,637x = 2,199,583,375.86
  5. Step 5: Solve for x
    x = 2,199,583,375.86/52,637
  6. Step 6: Final answer
    x = 41,787.78

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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.