Home / 54,865.08-75,712.50-30,990.96

Finding the Fourth Proportional to 54,865.08, 75,712.50 and 30,990.96

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Solution

The fourth proportional to 54,865.08, 75,712.50 and 30,990.96 is: 42,766.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,865.08 : 75,712.50 = 30,990.96 : x
  2. Step 2: Convert to fraction form
    54,865.08/75,712.50 = 30,990.96/x
  3. Step 3: Cross multiply
    54,865.08x = 75,712.50 × 30,990.96
  4. Step 4: Simplify right side
    54,865.08x = 2,346,403,059
  5. Step 5: Solve for x
    x = 2,346,403,059/54,865.08
  6. Step 6: Final answer
    x = 42,766.78

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.