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Finding the Fourth Proportional to 55,168.59, 82,752.89 and 13,615.59

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Solution

The fourth proportional to 55,168.59, 82,752.89 and 13,615.59 is: 20,423.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,168.59 : 82,752.89 = 13,615.59 : x
  2. Step 2: Convert to fraction form
    55,168.59/82,752.89 = 13,615.59/x
  3. Step 3: Cross multiply
    55,168.59x = 82,752.89 × 13,615.59
  4. Step 4: Simplify right side
    55,168.59x = 1,126,729,740.39
  5. Step 5: Solve for x
    x = 1,126,729,740.39/55,168.59
  6. Step 6: Final answer
    x = 20,423.39

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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.