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Finding the Fourth Proportional to 75,772.80, 113,464.80 and 72,273.60

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Solution

The fourth proportional to 75,772.80, 113,464.80 and 72,273.60 is: 108,224.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,772.80 : 113,464.80 = 72,273.60 : x
  2. Step 2: Convert to fraction form
    75,772.80/113,464.80 = 72,273.60/x
  3. Step 3: Cross multiply
    75,772.80x = 113,464.80 × 72,273.60
  4. Step 4: Simplify right side
    75,772.80x = 8,200,509,569.28
  5. Step 5: Solve for x
    x = 8,200,509,569.28/75,772.80
  6. Step 6: Final answer
    x = 108,224.98

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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.