Home / 82,045.40-123,068.10-19,715.90

Finding the Fourth Proportional to 82,045.40, 123,068.10 and 19,715.90

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Solution

The fourth proportional to 82,045.40, 123,068.10 and 19,715.90 is: 29,573.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,045.40 : 123,068.10 = 19,715.90 : x
  2. Step 2: Convert to fraction form
    82,045.40/123,068.10 = 19,715.90/x
  3. Step 3: Cross multiply
    82,045.40x = 123,068.10 × 19,715.90
  4. Step 4: Simplify right side
    82,045.40x = 2,426,398,352.79
  5. Step 5: Solve for x
    x = 2,426,398,352.79/82,045.40
  6. Step 6: Final answer
    x = 29,573.85

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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.