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Finding the Fourth Proportional to 81,576.84, 112,576.35 and 47,608.79

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Solution

The fourth proportional to 81,576.84, 112,576.35 and 47,608.79 is: 65,700.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,576.84 : 112,576.35 = 47,608.79 : x
  2. Step 2: Convert to fraction form
    81,576.84/112,576.35 = 47,608.79/x
  3. Step 3: Cross multiply
    81,576.84x = 112,576.35 × 47,608.79
  4. Step 4: Simplify right side
    81,576.84x = 5,359,623,153.97
  5. Step 5: Solve for x
    x = 5,359,623,153.97/81,576.84
  6. Step 6: Final answer
    x = 65,700.30

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1.5x scale

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.