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Finding the Fourth Proportional to 75,000.80, 112,501.20 and 48,389.60

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Solution

The fourth proportional to 75,000.80, 112,501.20 and 48,389.60 is: 72,584.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,000.80 : 112,501.20 = 48,389.60 : x
  2. Step 2: Convert to fraction form
    75,000.80/112,501.20 = 48,389.60/x
  3. Step 3: Cross multiply
    75,000.80x = 112,501.20 × 48,389.60
  4. Step 4: Simplify right side
    75,000.80x = 5,443,888,067.52
  5. Step 5: Solve for x
    x = 5,443,888,067.52/75,000.80
  6. Step 6: Final answer
    x = 72,584.40

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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.