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Finding the Fourth Proportional to 45,362.52, 68,020.35 and 20,381.22

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Solution

The fourth proportional to 45,362.52, 68,020.35 and 20,381.22 is: 30,561.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,362.52 : 68,020.35 = 20,381.22 : x
  2. Step 2: Convert to fraction form
    45,362.52/68,020.35 = 20,381.22/x
  3. Step 3: Cross multiply
    45,362.52x = 68,020.35 × 20,381.22
  4. Step 4: Simplify right side
    45,362.52x = 1,386,337,717.83
  5. Step 5: Solve for x
    x = 1,386,337,717.83/45,362.52
  6. Step 6: Final answer
    x = 30,561.30

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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.