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Finding the Fourth Proportional to 74,936.32, 112,401.88 and 18,776.92

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Solution

The fourth proportional to 74,936.32, 112,401.88 and 18,776.92 is: 28,164.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,936.32 : 112,401.88 = 18,776.92 : x
  2. Step 2: Convert to fraction form
    74,936.32/112,401.88 = 18,776.92/x
  3. Step 3: Cross multiply
    74,936.32x = 112,401.88 × 18,776.92
  4. Step 4: Simplify right side
    74,936.32x = 2,110,561,108.61
  5. Step 5: Solve for x
    x = 2,110,561,108.61/74,936.32
  6. Step 6: Final answer
    x = 28,164.73

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1.5x scale

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.