Home / 54,638.78-75,403.38-31,979.88

Finding the Fourth Proportional to 54,638.78, 75,403.38 and 31,979.88

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Solution

The fourth proportional to 54,638.78, 75,403.38 and 31,979.88 is: 44,133.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,638.78 : 75,403.38 = 31,979.88 : x
  2. Step 2: Convert to fraction form
    54,638.78/75,403.38 = 31,979.88/x
  3. Step 3: Cross multiply
    54,638.78x = 75,403.38 × 31,979.88
  4. Step 4: Simplify right side
    54,638.78x = 2,411,390,900.45
  5. Step 5: Solve for x
    x = 2,411,390,900.45/54,638.78
  6. Step 6: Final answer
    x = 44,133.32

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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.