Home / 66,251.34-91,396.69-39,378.58

Finding the Fourth Proportional to 66,251.34, 91,396.69 and 39,378.58

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Solution

The fourth proportional to 66,251.34, 91,396.69 and 39,378.58 is: 54,324.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,251.34 : 91,396.69 = 39,378.58 : x
  2. Step 2: Convert to fraction form
    66,251.34/91,396.69 = 39,378.58/x
  3. Step 3: Cross multiply
    66,251.34x = 91,396.69 × 39,378.58
  4. Step 4: Simplify right side
    66,251.34x = 3,599,071,868.90
  5. Step 5: Solve for x
    x = 3,599,071,868.90/66,251.34
  6. Step 6: Final answer
    x = 54,324.51

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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.