Home / 55,639.13-76,781.99-30,488.09

Finding the Fourth Proportional to 55,639.13, 76,781.99 and 30,488.09

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Solution

The fourth proportional to 55,639.13, 76,781.99 and 30,488.09 is: 42,073.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,639.13 : 76,781.99 = 30,488.09 : x
  2. Step 2: Convert to fraction form
    55,639.13/76,781.99 = 30,488.09/x
  3. Step 3: Cross multiply
    55,639.13x = 76,781.99 × 30,488.09
  4. Step 4: Simplify right side
    55,639.13x = 2,340,935,913.81
  5. Step 5: Solve for x
    x = 2,340,935,913.81/55,639.13
  6. Step 6: Final answer
    x = 42,073.56

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.