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Finding the Fourth Proportional to 66,479.70, 99,773.95 and 65,961.30

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Solution

The fourth proportional to 66,479.70, 99,773.95 and 65,961.30 is: 98,995.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,479.70 : 99,773.95 = 65,961.30 : x
  2. Step 2: Convert to fraction form
    66,479.70/99,773.95 = 65,961.30/x
  3. Step 3: Cross multiply
    66,479.70x = 99,773.95 × 65,961.30
  4. Step 4: Simplify right side
    66,479.70x = 6,581,219,448.14
  5. Step 5: Solve for x
    x = 6,581,219,448.14/66,479.70
  6. Step 6: Final answer
    x = 98,995.93

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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.