Home / 90,811.84-125,317.18-49,972.15

Finding the Fourth Proportional to 90,811.84, 125,317.18 and 49,972.15

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Solution

The fourth proportional to 90,811.84, 125,317.18 and 49,972.15 is: 68,959.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,811.84 : 125,317.18 = 49,972.15 : x
  2. Step 2: Convert to fraction form
    90,811.84/125,317.18 = 49,972.15/x
  3. Step 3: Cross multiply
    90,811.84x = 125,317.18 × 49,972.15
  4. Step 4: Simplify right side
    90,811.84x = 6,262,368,916.54
  5. Step 5: Solve for x
    x = 6,262,368,916.54/90,811.84
  6. Step 6: Final answer
    x = 68,959.83

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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.