Home / 54,929.88-75,807.12-31,056.78

Finding the Fourth Proportional to 54,929.88, 75,807.12 and 31,056.78

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Solution

The fourth proportional to 54,929.88, 75,807.12 and 31,056.78 is: 42,860.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,929.88 : 75,807.12 = 31,056.78 : x
  2. Step 2: Convert to fraction form
    54,929.88/75,807.12 = 31,056.78/x
  3. Step 3: Cross multiply
    54,929.88x = 75,807.12 × 31,056.78
  4. Step 4: Simplify right side
    54,929.88x = 2,354,325,048.27
  5. Step 5: Solve for x
    x = 2,354,325,048.27/54,929.88
  6. Step 6: Final answer
    x = 42,860.55

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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.