Home / 83,105.19-124,712.46-30,515.13

Finding the Fourth Proportional to 83,105.19, 124,712.46 and 30,515.13

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Solution

The fourth proportional to 83,105.19, 124,712.46 and 30,515.13 is: 45,792.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,105.19 : 124,712.46 = 30,515.13 : x
  2. Step 2: Convert to fraction form
    83,105.19/124,712.46 = 30,515.13/x
  3. Step 3: Cross multiply
    83,105.19x = 124,712.46 × 30,515.13
  4. Step 4: Simplify right side
    83,105.19x = 3,805,616,929.52
  5. Step 5: Solve for x
    x = 3,805,616,929.52/83,105.19
  6. Step 6: Final answer
    x = 45,792.77

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1.5x scale

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.