Home / 82,117.37-123,176.05-19,787.87

Finding the Fourth Proportional to 82,117.37, 123,176.05 and 19,787.87

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Solution

The fourth proportional to 82,117.37, 123,176.05 and 19,787.87 is: 29,681.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,117.37 : 123,176.05 = 19,787.87 : x
  2. Step 2: Convert to fraction form
    82,117.37/123,176.05 = 19,787.87/x
  3. Step 3: Cross multiply
    82,117.37x = 123,176.05 × 19,787.87
  4. Step 4: Simplify right side
    82,117.37x = 2,437,390,999.16
  5. Step 5: Solve for x
    x = 2,437,390,999.16/82,117.37
  6. Step 6: Final answer
    x = 29,681.80

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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.