Home / 55,639.62-76,780.17-30,488.58

Finding the Fourth Proportional to 55,639.62, 76,780.17 and 30,488.58

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Solution

The fourth proportional to 55,639.62, 76,780.17 and 30,488.58 is: 42,072.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,639.62 : 76,780.17 = 30,488.58 : x
  2. Step 2: Convert to fraction form
    55,639.62/76,780.17 = 30,488.58/x
  3. Step 3: Cross multiply
    55,639.62x = 76,780.17 × 30,488.58
  4. Step 4: Simplify right side
    55,639.62x = 2,340,918,355.46
  5. Step 5: Solve for x
    x = 2,340,918,355.46/55,639.62
  6. Step 6: Final answer
    x = 42,072.87

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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.