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Finding the Fourth Proportional to 82,955.80, 124,433.70 and 20,626.30

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Solution

The fourth proportional to 82,955.80, 124,433.70 and 20,626.30 is: 30,939.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,955.80 : 124,433.70 = 20,626.30 : x
  2. Step 2: Convert to fraction form
    82,955.80/124,433.70 = 20,626.30/x
  3. Step 3: Cross multiply
    82,955.80x = 124,433.70 × 20,626.30
  4. Step 4: Simplify right side
    82,955.80x = 2,566,606,826.31
  5. Step 5: Solve for x
    x = 2,566,606,826.31/82,955.80
  6. Step 6: Final answer
    x = 30,939.45

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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.