Home / 54,853.48-75,694.74-30,985

Finding the Fourth Proportional to 54,853.48, 75,694.74 and 30,985

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Solution

The fourth proportional to 54,853.48, 75,694.74 and 30,985 is: 42,757.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,853.48 : 75,694.74 = 30,985 : x
  2. Step 2: Convert to fraction form
    54,853.48/75,694.74 = 30,985/x
  3. Step 3: Cross multiply
    54,853.48x = 75,694.74 × 30,985
  4. Step 4: Simplify right side
    54,853.48x = 2,345,401,518.90
  5. Step 5: Solve for x
    x = 2,345,401,518.90/54,853.48
  6. Step 6: Final answer
    x = 42,757.57

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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.