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Finding the Fourth Proportional to 75,268.80, 112,903.20 and 63,021.60

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Solution

The fourth proportional to 75,268.80, 112,903.20 and 63,021.60 is: 94,532.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,268.80 : 112,903.20 = 63,021.60 : x
  2. Step 2: Convert to fraction form
    75,268.80/112,903.20 = 63,021.60/x
  3. Step 3: Cross multiply
    75,268.80x = 112,903.20 × 63,021.60
  4. Step 4: Simplify right side
    75,268.80x = 7,115,340,309.12
  5. Step 5: Solve for x
    x = 7,115,340,309.12/75,268.80
  6. Step 6: Final answer
    x = 94,532.40

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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.