Home / 90,717.54-124,859.70-79,891.62

Finding the Fourth Proportional to 90,717.54, 124,859.70 and 79,891.62

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Solution

The fourth proportional to 90,717.54, 124,859.70 and 79,891.62 is: 109,959.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,717.54 : 124,859.70 = 79,891.62 : x
  2. Step 2: Convert to fraction form
    90,717.54/124,859.70 = 79,891.62/x
  3. Step 3: Cross multiply
    90,717.54x = 124,859.70 × 79,891.62
  4. Step 4: Simplify right side
    90,717.54x = 9,975,243,705.71
  5. Step 5: Solve for x
    x = 9,975,243,705.71/90,717.54
  6. Step 6: Final answer
    x = 109,959.37

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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.