Home / 47,134.20-70,701.30-20,825.40

Finding the Fourth Proportional to 47,134.20, 70,701.30 and 20,825.40

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Solution

The fourth proportional to 47,134.20, 70,701.30 and 20,825.40 is: 31,238.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,134.20 : 70,701.30 = 20,825.40 : x
  2. Step 2: Convert to fraction form
    47,134.20/70,701.30 = 20,825.40/x
  3. Step 3: Cross multiply
    47,134.20x = 70,701.30 × 20,825.40
  4. Step 4: Simplify right side
    47,134.20x = 1,472,382,853.02
  5. Step 5: Solve for x
    x = 1,472,382,853.02/47,134.20
  6. Step 6: Final answer
    x = 31,238.10

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.