Home / 51,422.36-70,963.90-28,758.88

Finding the Fourth Proportional to 51,422.36, 70,963.90 and 28,758.88

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Solution

The fourth proportional to 51,422.36, 70,963.90 and 28,758.88 is: 39,687.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,422.36 : 70,963.90 = 28,758.88 : x
  2. Step 2: Convert to fraction form
    51,422.36/70,963.90 = 28,758.88/x
  3. Step 3: Cross multiply
    51,422.36x = 70,963.90 × 28,758.88
  4. Step 4: Simplify right side
    51,422.36x = 2,040,842,301.24
  5. Step 5: Solve for x
    x = 2,040,842,301.24/51,422.36
  6. Step 6: Final answer
    x = 39,687.84

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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.