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Finding the Fourth Proportional to 75,015.48, 112,423.86 and 39,879.48

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Solution

The fourth proportional to 75,015.48, 112,423.86 and 39,879.48 is: 59,766.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,015.48 : 112,423.86 = 39,879.48 : x
  2. Step 2: Convert to fraction form
    75,015.48/112,423.86 = 39,879.48/x
  3. Step 3: Cross multiply
    75,015.48x = 112,423.86 × 39,879.48
  4. Step 4: Simplify right side
    75,015.48x = 4,483,405,076.39
  5. Step 5: Solve for x
    x = 4,483,405,076.39/75,015.48
  6. Step 6: Final answer
    x = 59,766.40

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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.