Home / 51,639.78-77,264.04-30,591.12

Finding the Fourth Proportional to 51,639.78, 77,264.04 and 30,591.12

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Solution

The fourth proportional to 51,639.78, 77,264.04 and 30,591.12 is: 45,770.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,639.78 : 77,264.04 = 30,591.12 : x
  2. Step 2: Convert to fraction form
    51,639.78/77,264.04 = 30,591.12/x
  3. Step 3: Cross multiply
    51,639.78x = 77,264.04 × 30,591.12
  4. Step 4: Simplify right side
    51,639.78x = 2,363,593,519.32
  5. Step 5: Solve for x
    x = 2,363,593,519.32/51,639.78
  6. Step 6: Final answer
    x = 45,770.79

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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.