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Finding the Fourth Proportional to 75,784.80, 113,482.80 and 72,285.60

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Solution

The fourth proportional to 75,784.80, 113,482.80 and 72,285.60 is: 108,242.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,784.80 : 113,482.80 = 72,285.60 : x
  2. Step 2: Convert to fraction form
    75,784.80/113,482.80 = 72,285.60/x
  3. Step 3: Cross multiply
    75,784.80x = 113,482.80 × 72,285.60
  4. Step 4: Simplify right side
    75,784.80x = 8,203,172,287.68
  5. Step 5: Solve for x
    x = 8,203,172,287.68/75,784.80
  6. Step 6: Final answer
    x = 108,242.98

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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.