Home / 40,103.61-55,344.45-21,955.59

Finding the Fourth Proportional to 40,103.61, 55,344.45 and 21,955.59

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Solution

The fourth proportional to 40,103.61, 55,344.45 and 21,955.59 is: 30,299.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,103.61 : 55,344.45 = 21,955.59 : x
  2. Step 2: Convert to fraction form
    40,103.61/55,344.45 = 21,955.59/x
  3. Step 3: Cross multiply
    40,103.61x = 55,344.45 × 21,955.59
  4. Step 4: Simplify right side
    40,103.61x = 1,215,120,052.98
  5. Step 5: Solve for x
    x = 1,215,120,052.98/40,103.61
  6. Step 6: Final answer
    x = 30,299.52

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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.