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Finding the Fourth Proportional to 54,322.40, 81,483.60 and 44,991.20

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Solution

The fourth proportional to 54,322.40, 81,483.60 and 44,991.20 is: 67,486.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,322.40 : 81,483.60 = 44,991.20 : x
  2. Step 2: Convert to fraction form
    54,322.40/81,483.60 = 44,991.20/x
  3. Step 3: Cross multiply
    54,322.40x = 81,483.60 × 44,991.20
  4. Step 4: Simplify right side
    54,322.40x = 3,666,044,944.32
  5. Step 5: Solve for x
    x = 3,666,044,944.32/54,322.40
  6. Step 6: Final answer
    x = 67,486.80

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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.