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Finding the Fourth Proportional to 66,023.10, 91,108.80 and 40,524.30

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Solution

The fourth proportional to 66,023.10, 91,108.80 and 40,524.30 is: 55,921.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,023.10 : 91,108.80 = 40,524.30 : x
  2. Step 2: Convert to fraction form
    66,023.10/91,108.80 = 40,524.30/x
  3. Step 3: Cross multiply
    66,023.10x = 91,108.80 × 40,524.30
  4. Step 4: Simplify right side
    66,023.10x = 3,692,120,343.84
  5. Step 5: Solve for x
    x = 3,692,120,343.84/66,023.10
  6. Step 6: Final answer
    x = 55,921.64

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.