Home / 66,631.20-91,954.56-38,341.20

Finding the Fourth Proportional to 66,631.20, 91,954.56 and 38,341.20

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Solution

The fourth proportional to 66,631.20, 91,954.56 and 38,341.20 is: 52,912.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,631.20 : 91,954.56 = 38,341.20 : x
  2. Step 2: Convert to fraction form
    66,631.20/91,954.56 = 38,341.20/x
  3. Step 3: Cross multiply
    66,631.20x = 91,954.56 × 38,341.20
  4. Step 4: Simplify right side
    66,631.20x = 3,525,648,175.87
  5. Step 5: Solve for x
    x = 3,525,648,175.87/66,631.20
  6. Step 6: Final answer
    x = 52,912.87

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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.