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Finding the Fourth Proportional to 55,127.40, 82,641.08 and 20,042.25

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Solution

The fourth proportional to 55,127.40, 82,641.08 and 20,042.25 is: 30,045.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,127.40 : 82,641.08 = 20,042.25 : x
  2. Step 2: Convert to fraction form
    55,127.40/82,641.08 = 20,042.25/x
  3. Step 3: Cross multiply
    55,127.40x = 82,641.08 × 20,042.25
  4. Step 4: Simplify right side
    55,127.40x = 1,656,313,085.42
  5. Step 5: Solve for x
    x = 1,656,313,085.42/55,127.40
  6. Step 6: Final answer
    x = 30,045.19

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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.