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Finding the Fourth Proportional to 68,368.67, 102,405.34 and 66,695.61

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Solution

The fourth proportional to 68,368.67, 102,405.34 and 66,695.61 is: 99,899.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,368.67 : 102,405.34 = 66,695.61 : x
  2. Step 2: Convert to fraction form
    68,368.67/102,405.34 = 66,695.61/x
  3. Step 3: Cross multiply
    68,368.67x = 102,405.34 × 66,695.61
  4. Step 4: Simplify right side
    68,368.67x = 6,829,986,618.56
  5. Step 5: Solve for x
    x = 6,829,986,618.56/68,368.67
  6. Step 6: Final answer
    x = 99,899.36

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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.