Home / 31,169,836.80-42,986,522.88-19,568,481.12

Finding the Fourth Proportional to 31,169,836.80, 42,986,522.88 and 19,568,481.12

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Solution

The fourth proportional to 31,169,836.80, 42,986,522.88 and 19,568,481.12 is: 26,987,018.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,169,836.80 : 42,986,522.88 = 19,568,481.12 : x
  2. Step 2: Convert to fraction form
    31,169,836.80/42,986,522.88 = 19,568,481.12/x
  3. Step 3: Cross multiply
    31,169,836.80x = 42,986,522.88 × 19,568,481.12
  4. Step 4: Simplify right side
    31,169,836.80x = 841,180,961,391,728.12
  5. Step 5: Solve for x
    x = 841,180,961,391,728.12/31,169,836.80
  6. Step 6: Final answer
    x = 26,987,018.47

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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.