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Finding the Fourth Proportional to 66,762.55, 100,149.27 and 29,317.42

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Solution

The fourth proportional to 66,762.55, 100,149.27 and 29,317.42 is: 43,978.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,762.55 : 100,149.27 = 29,317.42 : x
  2. Step 2: Convert to fraction form
    66,762.55/100,149.27 = 29,317.42/x
  3. Step 3: Cross multiply
    66,762.55x = 100,149.27 × 29,317.42
  4. Step 4: Simplify right side
    66,762.55x = 2,936,118,211.28
  5. Step 5: Solve for x
    x = 2,936,118,211.28/66,762.55
  6. Step 6: Final answer
    x = 43,978.52

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1.5x scale

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.