Home / 74,785.78-103,146.01-47,930.84

Finding the Fourth Proportional to 74,785.78, 103,146.01 and 47,930.84

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Solution

The fourth proportional to 74,785.78, 103,146.01 and 47,930.84 is: 66,107.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,785.78 : 103,146.01 = 47,930.84 : x
  2. Step 2: Convert to fraction form
    74,785.78/103,146.01 = 47,930.84/x
  3. Step 3: Cross multiply
    74,785.78x = 103,146.01 × 47,930.84
  4. Step 4: Simplify right side
    74,785.78x = 4,943,874,653.19
  5. Step 5: Solve for x
    x = 4,943,874,653.19/74,785.78
  6. Step 6: Final answer
    x = 66,107.15

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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.