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Finding the Fourth Proportional to 80,775.60, 121,114.80 and 41,409.60

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Solution

The fourth proportional to 80,775.60, 121,114.80 and 41,409.60 is: 62,089.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,775.60 : 121,114.80 = 41,409.60 : x
  2. Step 2: Convert to fraction form
    80,775.60/121,114.80 = 41,409.60/x
  3. Step 3: Cross multiply
    80,775.60x = 121,114.80 × 41,409.60
  4. Step 4: Simplify right side
    80,775.60x = 5,015,315,422.08
  5. Step 5: Solve for x
    x = 5,015,315,422.08/80,775.60
  6. Step 6: Final answer
    x = 62,089.49

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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.