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Finding the Fourth Proportional to 32,405.20, 48,607.80 and 20,731.60

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Solution

The fourth proportional to 32,405.20, 48,607.80 and 20,731.60 is: 31,097.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    32,405.20 : 48,607.80 = 20,731.60 : x
  2. Step 2: Convert to fraction form
    32,405.20/48,607.80 = 20,731.60/x
  3. Step 3: Cross multiply
    32,405.20x = 48,607.80 × 20,731.60
  4. Step 4: Simplify right side
    32,405.20x = 1,007,717,466.48
  5. Step 5: Solve for x
    x = 1,007,717,466.48/32,405.20
  6. Step 6: Final answer
    x = 31,097.40

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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.