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Finding the Fourth Proportional to 71,725.80, 107,576.28 and 21,793.80

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Solution

The fourth proportional to 71,725.80, 107,576.28 and 21,793.80 is: 32,686.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,725.80 : 107,576.28 = 21,793.80 : x
  2. Step 2: Convert to fraction form
    71,725.80/107,576.28 = 21,793.80/x
  3. Step 3: Cross multiply
    71,725.80x = 107,576.28 × 21,793.80
  4. Step 4: Simplify right side
    71,725.80x = 2,344,495,931.06
  5. Step 5: Solve for x
    x = 2,344,495,931.06/71,725.80
  6. Step 6: Final answer
    x = 32,686.93

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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.