Home / 79,447.06-109,639.74-43,640.38

Finding the Fourth Proportional to 79,447.06, 109,639.74 and 43,640.38

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Solution

The fourth proportional to 79,447.06, 109,639.74 and 43,640.38 is: 60,225.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,447.06 : 109,639.74 = 43,640.38 : x
  2. Step 2: Convert to fraction form
    79,447.06/109,639.74 = 43,640.38/x
  3. Step 3: Cross multiply
    79,447.06x = 109,639.74 × 43,640.38
  4. Step 4: Simplify right side
    79,447.06x = 4,784,719,916.70
  5. Step 5: Solve for x
    x = 4,784,719,916.70/79,447.06
  6. Step 6: Final answer
    x = 60,225.26

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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.