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Finding the Fourth Proportional to 55,363.72, 83,045.13 and 15,920.68

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Solution

The fourth proportional to 55,363.72, 83,045.13 and 15,920.68 is: 23,880.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,363.72 : 83,045.13 = 15,920.68 : x
  2. Step 2: Convert to fraction form
    55,363.72/83,045.13 = 15,920.68/x
  3. Step 3: Cross multiply
    55,363.72x = 83,045.13 × 15,920.68
  4. Step 4: Simplify right side
    55,363.72x = 1,322,134,940.29
  5. Step 5: Solve for x
    x = 1,322,134,940.29/55,363.72
  6. Step 6: Final answer
    x = 23,880.89

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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.