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Finding the Fourth Proportional to 92,235.40, 138,417.90 and 39,682.60

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Solution

The fourth proportional to 92,235.40, 138,417.90 and 39,682.60 is: 59,551.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,235.40 : 138,417.90 = 39,682.60 : x
  2. Step 2: Convert to fraction form
    92,235.40/138,417.90 = 39,682.60/x
  3. Step 3: Cross multiply
    92,235.40x = 138,417.90 × 39,682.60
  4. Step 4: Simplify right side
    92,235.40x = 5,492,782,158.54
  5. Step 5: Solve for x
    x = 5,492,782,158.54/92,235.40
  6. Step 6: Final answer
    x = 59,551.78

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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.