Home / 66,113.10-99,156.92-18,716.72

Finding the Fourth Proportional to 66,113.10, 99,156.92 and 18,716.72

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Solution

The fourth proportional to 66,113.10, 99,156.92 and 18,716.72 is: 28,071.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,113.10 : 99,156.92 = 18,716.72 : x
  2. Step 2: Convert to fraction form
    66,113.10/99,156.92 = 18,716.72/x
  3. Step 3: Cross multiply
    66,113.10x = 99,156.92 × 18,716.72
  4. Step 4: Simplify right side
    66,113.10x = 1,855,892,307.70
  5. Step 5: Solve for x
    x = 1,855,892,307.70/66,113.10
  6. Step 6: Final answer
    x = 28,071.48

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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.