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Finding the Fourth Proportional to 66,855.79, 92,241.21 and 38,174.50

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Solution

The fourth proportional to 66,855.79, 92,241.21 and 38,174.50 is: 52,669.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,855.79 : 92,241.21 = 38,174.50 : x
  2. Step 2: Convert to fraction form
    66,855.79/92,241.21 = 38,174.50/x
  3. Step 3: Cross multiply
    66,855.79x = 92,241.21 × 38,174.50
  4. Step 4: Simplify right side
    66,855.79x = 3,521,262,071.15
  5. Step 5: Solve for x
    x = 3,521,262,071.15/66,855.79
  6. Step 6: Final answer
    x = 52,669.52

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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.