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Finding the Fourth Proportional to 55,346.88, 82,970.88 and 20,262.72

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Solution

The fourth proportional to 55,346.88, 82,970.88 and 20,262.72 is: 30,375.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,346.88 : 82,970.88 = 20,262.72 : x
  2. Step 2: Convert to fraction form
    55,346.88/82,970.88 = 20,262.72/x
  3. Step 3: Cross multiply
    55,346.88x = 82,970.88 × 20,262.72
  4. Step 4: Simplify right side
    55,346.88x = 1,681,215,709.59
  5. Step 5: Solve for x
    x = 1,681,215,709.59/55,346.88
  6. Step 6: Final answer
    x = 30,375.98

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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.