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Finding the Fourth Proportional to 66,579.78, 99,763.23 and 46,626.90

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Solution

The fourth proportional to 66,579.78, 99,763.23 and 46,626.90 is: 69,865.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,579.78 : 99,763.23 = 46,626.90 : x
  2. Step 2: Convert to fraction form
    66,579.78/99,763.23 = 46,626.90/x
  3. Step 3: Cross multiply
    66,579.78x = 99,763.23 × 46,626.90
  4. Step 4: Simplify right side
    66,579.78x = 4,651,650,148.89
  5. Step 5: Solve for x
    x = 4,651,650,148.89/66,579.78
  6. Step 6: Final answer
    x = 69,865.81

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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.