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Finding the Fourth Proportional to 50,321.60, 75,482.40 and 20,729.60

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Solution

The fourth proportional to 50,321.60, 75,482.40 and 20,729.60 is: 31,094.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    50,321.60 : 75,482.40 = 20,729.60 : x
  2. Step 2: Convert to fraction form
    50,321.60/75,482.40 = 20,729.60/x
  3. Step 3: Cross multiply
    50,321.60x = 75,482.40 × 20,729.60
  4. Step 4: Simplify right side
    50,321.60x = 1,564,719,959.04
  5. Step 5: Solve for x
    x = 1,564,719,959.04/50,321.60
  6. Step 6: Final answer
    x = 31,094.40

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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.