Home / 55,639.27-76,781.68-30,488.77

Finding the Fourth Proportional to 55,639.27, 76,781.68 and 30,488.77

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Solution

The fourth proportional to 55,639.27, 76,781.68 and 30,488.77 is: 42,074.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,639.27 : 76,781.68 = 30,488.77 : x
  2. Step 2: Convert to fraction form
    55,639.27/76,781.68 = 30,488.77/x
  3. Step 3: Cross multiply
    55,639.27x = 76,781.68 × 30,488.77
  4. Step 4: Simplify right side
    55,639.27x = 2,340,978,981.73
  5. Step 5: Solve for x
    x = 2,340,978,981.73/55,639.27
  6. Step 6: Final answer
    x = 42,074.22

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1.5x scale

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.