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Finding the Fourth Proportional to 55,651.76, 83,490.60 and 18,213.68

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Solution

The fourth proportional to 55,651.76, 83,490.60 and 18,213.68 is: 27,324.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,651.76 : 83,490.60 = 18,213.68 : x
  2. Step 2: Convert to fraction form
    55,651.76/83,490.60 = 18,213.68/x
  3. Step 3: Cross multiply
    55,651.76x = 83,490.60 × 18,213.68
  4. Step 4: Simplify right side
    55,651.76x = 1,520,671,071.41
  5. Step 5: Solve for x
    x = 1,520,671,071.41/55,651.76
  6. Step 6: Final answer
    x = 27,324.76

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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.