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Finding the Fourth Proportional to 84,560.84, 126,830.30 and 31,963.48

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Solution

The fourth proportional to 84,560.84, 126,830.30 and 31,963.48 is: 47,941.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,560.84 : 126,830.30 = 31,963.48 : x
  2. Step 2: Convert to fraction form
    84,560.84/126,830.30 = 31,963.48/x
  3. Step 3: Cross multiply
    84,560.84x = 126,830.30 × 31,963.48
  4. Step 4: Simplify right side
    84,560.84x = 4,053,937,757.44
  5. Step 5: Solve for x
    x = 4,053,937,757.44/84,560.84
  6. Step 6: Final answer
    x = 47,941.08

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.