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Finding the Fourth Proportional to 55,407.40, 83,118.28 and 25,414.40

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Solution

The fourth proportional to 55,407.40, 83,118.28 and 25,414.40 is: 38,124.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,407.40 : 83,118.28 = 25,414.40 : x
  2. Step 2: Convert to fraction form
    55,407.40/83,118.28 = 25,414.40/x
  3. Step 3: Cross multiply
    55,407.40x = 83,118.28 × 25,414.40
  4. Step 4: Simplify right side
    55,407.40x = 2,112,401,215.23
  5. Step 5: Solve for x
    x = 2,112,401,215.23/55,407.40
  6. Step 6: Final answer
    x = 38,124.90

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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.