Home / 82,072.82-123,122.40-34,688.38

Finding the Fourth Proportional to 82,072.82, 123,122.40 and 34,688.38

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Solution

The fourth proportional to 82,072.82, 123,122.40 and 34,688.38 is: 52,038.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,072.82 : 123,122.40 = 34,688.38 : x
  2. Step 2: Convert to fraction form
    82,072.82/123,122.40 = 34,688.38/x
  3. Step 3: Cross multiply
    82,072.82x = 123,122.40 × 34,688.38
  4. Step 4: Simplify right side
    82,072.82x = 4,270,916,597.71
  5. Step 5: Solve for x
    x = 4,270,916,597.71/82,072.82
  6. Step 6: Final answer
    x = 52,038.14

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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.