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Finding the Fourth Proportional to 41,160.60, 61,740.90 and 13,458.60

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Solution

The fourth proportional to 41,160.60, 61,740.90 and 13,458.60 is: 20,187.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    41,160.60 : 61,740.90 = 13,458.60 : x
  2. Step 2: Convert to fraction form
    41,160.60/61,740.90 = 13,458.60/x
  3. Step 3: Cross multiply
    41,160.60x = 61,740.90 × 13,458.60
  4. Step 4: Simplify right side
    41,160.60x = 830,946,076.74
  5. Step 5: Solve for x
    x = 830,946,076.74/41,160.60
  6. Step 6: Final answer
    x = 20,187.90

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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.