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Finding the Fourth Proportional to 61,146.45, 91,719.68 and 55,241.55

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Solution

The fourth proportional to 61,146.45, 91,719.68 and 55,241.55 is: 82,862.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,146.45 : 91,719.68 = 55,241.55 : x
  2. Step 2: Convert to fraction form
    61,146.45/91,719.68 = 55,241.55/x
  3. Step 3: Cross multiply
    61,146.45x = 91,719.68 × 55,241.55
  4. Step 4: Simplify right side
    61,146.45x = 5,066,737,012.50
  5. Step 5: Solve for x
    x = 5,066,737,012.50/61,146.45
  6. Step 6: Final answer
    x = 82,862.33

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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.