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Finding the Fourth Proportional to 85,850.71, 118,449.84 and 67,644.98

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Solution

The fourth proportional to 85,850.71, 118,449.84 and 67,644.98 is: 93,331.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,850.71 : 118,449.84 = 67,644.98 : x
  2. Step 2: Convert to fraction form
    85,850.71/118,449.84 = 67,644.98/x
  3. Step 3: Cross multiply
    85,850.71x = 118,449.84 × 67,644.98
  4. Step 4: Simplify right side
    85,850.71x = 8,012,537,057.80
  5. Step 5: Solve for x
    x = 8,012,537,057.80/85,850.71
  6. Step 6: Final answer
    x = 93,331.05

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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.