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Finding the Fourth Proportional to 71,576.65, 98,775.21 and 39,745.63

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Solution

The fourth proportional to 71,576.65, 98,775.21 and 39,745.63 is: 54,848.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,576.65 : 98,775.21 = 39,745.63 : x
  2. Step 2: Convert to fraction form
    71,576.65/98,775.21 = 39,745.63/x
  3. Step 3: Cross multiply
    71,576.65x = 98,775.21 × 39,745.63
  4. Step 4: Simplify right side
    71,576.65x = 3,925,882,949.83
  5. Step 5: Solve for x
    x = 3,925,882,949.83/71,576.65
  6. Step 6: Final answer
    x = 54,848.65

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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.