Home / 54,415.20-75,109.32-31,760.40

Finding the Fourth Proportional to 54,415.20, 75,109.32 and 31,760.40

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Solution

The fourth proportional to 54,415.20, 75,109.32 and 31,760.40 is: 43,838.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,415.20 : 75,109.32 = 31,760.40 : x
  2. Step 2: Convert to fraction form
    54,415.20/75,109.32 = 31,760.40/x
  3. Step 3: Cross multiply
    54,415.20x = 75,109.32 × 31,760.40
  4. Step 4: Simplify right side
    54,415.20x = 2,385,502,046.93
  5. Step 5: Solve for x
    x = 2,385,502,046.93/54,415.20
  6. Step 6: Final answer
    x = 43,838.89

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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.