Home / 31,007,420-42,789,821.64-17,256,380.48

Finding the Fourth Proportional to 31,007,420, 42,789,821.64 and 17,256,380.48

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Solution

The fourth proportional to 31,007,420, 42,789,821.64 and 17,256,380.48 is: 23,813,572.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,007,420 : 42,789,821.64 = 17,256,380.48 : x
  2. Step 2: Convert to fraction form
    31,007,420/42,789,821.64 = 17,256,380.48/x
  3. Step 3: Cross multiply
    31,007,420x = 42,789,821.64 × 17,256,380.48
  4. Step 4: Simplify right side
    31,007,420x = 738,397,442,891,177.62
  5. Step 5: Solve for x
    x = 738,397,442,891,177.62/31,007,420
  6. Step 6: Final answer
    x = 23,813,572.46

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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.