Home / 81,274.40-112,181.21-47,289.45

Finding the Fourth Proportional to 81,274.40, 112,181.21 and 47,289.45

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Solution

The fourth proportional to 81,274.40, 112,181.21 and 47,289.45 is: 65,272.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,274.40 : 112,181.21 = 47,289.45 : x
  2. Step 2: Convert to fraction form
    81,274.40/112,181.21 = 47,289.45/x
  3. Step 3: Cross multiply
    81,274.40x = 112,181.21 × 47,289.45
  4. Step 4: Simplify right side
    81,274.40x = 5,304,987,721.23
  5. Step 5: Solve for x
    x = 5,304,987,721.23/81,274.40
  6. Step 6: Final answer
    x = 65,272.55

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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.