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Finding the Fourth Proportional to 66,889.12, 92,316.42 and 41,403.64

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Solution

The fourth proportional to 66,889.12, 92,316.42 and 41,403.64 is: 57,142.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,889.12 : 92,316.42 = 41,403.64 : x
  2. Step 2: Convert to fraction form
    66,889.12/92,316.42 = 41,403.64/x
  3. Step 3: Cross multiply
    66,889.12x = 92,316.42 × 41,403.64
  4. Step 4: Simplify right side
    66,889.12x = 3,822,235,819.77
  5. Step 5: Solve for x
    x = 3,822,235,819.77/66,889.12
  6. Step 6: Final answer
    x = 57,142.86

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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.