Home / 82,145.13-123,254.75-47,084.82

Finding the Fourth Proportional to 82,145.13, 123,254.75 and 47,084.82

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Solution

The fourth proportional to 82,145.13, 123,254.75 and 47,084.82 is: 70,648.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,145.13 : 123,254.75 = 47,084.82 : x
  2. Step 2: Convert to fraction form
    82,145.13/123,254.75 = 47,084.82/x
  3. Step 3: Cross multiply
    82,145.13x = 123,254.75 × 47,084.82
  4. Step 4: Simplify right side
    82,145.13x = 5,803,427,717.90
  5. Step 5: Solve for x
    x = 5,803,427,717.90/82,145.13
  6. Step 6: Final answer
    x = 70,648.47

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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.