Home / 55,143.40-82,749.12-25,555.72

Finding the Fourth Proportional to 55,143.40, 82,749.12 and 25,555.72

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Solution

The fourth proportional to 55,143.40, 82,749.12 and 25,555.72 is: 38,349.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,143.40 : 82,749.12 = 25,555.72 : x
  2. Step 2: Convert to fraction form
    55,143.40/82,749.12 = 25,555.72/x
  3. Step 3: Cross multiply
    55,143.40x = 82,749.12 × 25,555.72
  4. Step 4: Simplify right side
    55,143.40x = 2,114,713,340.97
  5. Step 5: Solve for x
    x = 2,114,713,340.97/55,143.40
  6. Step 6: Final answer
    x = 38,349.35

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.