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Finding the Fourth Proportional to 32,486.40, 48,729.60 and 21,405.60

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Solution

The fourth proportional to 32,486.40, 48,729.60 and 21,405.60 is: 32,108.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    32,486.40 : 48,729.60 = 21,405.60 : x
  2. Step 2: Convert to fraction form
    32,486.40/48,729.60 = 21,405.60/x
  3. Step 3: Cross multiply
    32,486.40x = 48,729.60 × 21,405.60
  4. Step 4: Simplify right side
    32,486.40x = 1,043,086,325.76
  5. Step 5: Solve for x
    x = 1,043,086,325.76/32,486.40
  6. Step 6: Final answer
    x = 32,108.40

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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.