Home / 57,091,020.82-78,785,684.75-30,985,538.65

Finding the Fourth Proportional to 57,091,020.82, 78,785,684.75 and 30,985,538.65

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Solution

The fourth proportional to 57,091,020.82, 78,785,684.75 and 30,985,538.65 is: 42,760,084.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,091,020.82 : 78,785,684.75 = 30,985,538.65 : x
  2. Step 2: Convert to fraction form
    57,091,020.82/78,785,684.75 = 30,985,538.65/x
  3. Step 3: Cross multiply
    57,091,020.82x = 78,785,684.75 × 30,985,538.65
  4. Step 4: Simplify right side
    57,091,020.82x = 2,441,216,879,652,144.50
  5. Step 5: Solve for x
    x = 2,441,216,879,652,144.50/57,091,020.82
  6. Step 6: Final answer
    x = 42,760,084.59

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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.