Home / 47,943.20-66,161.40-27,811.76

Finding the Fourth Proportional to 47,943.20, 66,161.40 and 27,811.76

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Solution

The fourth proportional to 47,943.20, 66,161.40 and 27,811.76 is: 38,380.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,943.20 : 66,161.40 = 27,811.76 : x
  2. Step 2: Convert to fraction form
    47,943.20/66,161.40 = 27,811.76/x
  3. Step 3: Cross multiply
    47,943.20x = 66,161.40 × 27,811.76
  4. Step 4: Simplify right side
    47,943.20x = 1,840,064,978.06
  5. Step 5: Solve for x
    x = 1,840,064,978.06/47,943.20
  6. Step 6: Final answer
    x = 38,380.10

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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.