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Finding the Fourth Proportional to 55,874.76, 83,864.82 and 20,370.39

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Solution

The fourth proportional to 55,874.76, 83,864.82 and 20,370.39 is: 30,574.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,874.76 : 83,864.82 = 20,370.39 : x
  2. Step 2: Convert to fraction form
    55,874.76/83,864.82 = 20,370.39/x
  3. Step 3: Cross multiply
    55,874.76x = 83,864.82 × 20,370.39
  4. Step 4: Simplify right side
    55,874.76x = 1,708,359,090.68
  5. Step 5: Solve for x
    x = 1,708,359,090.68/55,874.76
  6. Step 6: Final answer
    x = 30,574.79

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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.