Home / 57,091,022.38-78,785,686.91-30,985,540.21

Finding the Fourth Proportional to 57,091,022.38, 78,785,686.91 and 30,985,540.21

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Solution

The fourth proportional to 57,091,022.38, 78,785,686.91 and 30,985,540.21 is: 42,760,086.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,091,022.38 : 78,785,686.91 = 30,985,540.21 : x
  2. Step 2: Convert to fraction form
    57,091,022.38/78,785,686.91 = 30,985,540.21/x
  3. Step 3: Cross multiply
    57,091,022.38x = 78,785,686.91 × 30,985,540.21
  4. Step 4: Simplify right side
    57,091,022.38x = 2,441,217,069,722,275.50
  5. Step 5: Solve for x
    x = 2,441,217,069,722,275.50/57,091,022.38
  6. Step 6: Final answer
    x = 42,760,086.75

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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.