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Finding the Fourth Proportional to 54,322.55, 81,463.77 and 18,774.80

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Solution

The fourth proportional to 54,322.55, 81,463.77 and 18,774.80 is: 28,155.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,322.55 : 81,463.77 = 18,774.80 : x
  2. Step 2: Convert to fraction form
    54,322.55/81,463.77 = 18,774.80/x
  3. Step 3: Cross multiply
    54,322.55x = 81,463.77 × 18,774.80
  4. Step 4: Simplify right side
    54,322.55x = 1,529,465,887.17
  5. Step 5: Solve for x
    x = 1,529,465,887.17/54,322.55
  6. Step 6: Final answer
    x = 28,155.27

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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.