Home / 66,315.19-91,500.78-39,452.45

Finding the Fourth Proportional to 66,315.19, 91,500.78 and 39,452.45

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Solution

The fourth proportional to 66,315.19, 91,500.78 and 39,452.45 is: 54,435.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,315.19 : 91,500.78 = 39,452.45 : x
  2. Step 2: Convert to fraction form
    66,315.19/91,500.78 = 39,452.45/x
  3. Step 3: Cross multiply
    66,315.19x = 91,500.78 × 39,452.45
  4. Step 4: Simplify right side
    66,315.19x = 3,609,930,261.66
  5. Step 5: Solve for x
    x = 3,609,930,261.66/66,315.19
  6. Step 6: Final answer
    x = 54,435.95

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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.