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Finding the Fourth Proportional to 73,916.20, 110,874.30 and 21,327.40

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Solution

The fourth proportional to 73,916.20, 110,874.30 and 21,327.40 is: 31,991.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,916.20 : 110,874.30 = 21,327.40 : x
  2. Step 2: Convert to fraction form
    73,916.20/110,874.30 = 21,327.40/x
  3. Step 3: Cross multiply
    73,916.20x = 110,874.30 × 21,327.40
  4. Step 4: Simplify right side
    73,916.20x = 2,364,660,545.82
  5. Step 5: Solve for x
    x = 2,364,660,545.82/73,916.20
  6. Step 6: Final answer
    x = 31,991.10

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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.