Home / 65,553.66-90,438.30-40,359.42

Finding the Fourth Proportional to 65,553.66, 90,438.30 and 40,359.42

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Solution

The fourth proportional to 65,553.66, 90,438.30 and 40,359.42 is: 55,680.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,553.66 : 90,438.30 = 40,359.42 : x
  2. Step 2: Convert to fraction form
    65,553.66/90,438.30 = 40,359.42/x
  3. Step 3: Cross multiply
    65,553.66x = 90,438.30 × 40,359.42
  4. Step 4: Simplify right side
    65,553.66x = 3,650,037,333.79
  5. Step 5: Solve for x
    x = 3,650,037,333.79/65,553.66
  6. Step 6: Final answer
    x = 55,680.15

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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.