Home / 86,864.28-119,880-49,145.76

Finding the Fourth Proportional to 86,864.28, 119,880 and 49,145.76

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Solution

The fourth proportional to 86,864.28, 119,880 and 49,145.76 is: 67,825.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,864.28 : 119,880 = 49,145.76 : x
  2. Step 2: Convert to fraction form
    86,864.28/119,880 = 49,145.76/x
  3. Step 3: Cross multiply
    86,864.28x = 119,880 × 49,145.76
  4. Step 4: Simplify right side
    86,864.28x = 5,891,593,708.80
  5. Step 5: Solve for x
    x = 5,891,593,708.80/86,864.28
  6. Step 6: Final answer
    x = 67,825.28

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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.