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Finding the Fourth Proportional to 54,362.40, 81,543.60 and 14,919.45

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Solution

The fourth proportional to 54,362.40, 81,543.60 and 14,919.45 is: 22,379.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,362.40 : 81,543.60 = 14,919.45 : x
  2. Step 2: Convert to fraction form
    54,362.40/81,543.60 = 14,919.45/x
  3. Step 3: Cross multiply
    54,362.40x = 81,543.60 × 14,919.45
  4. Step 4: Simplify right side
    54,362.40x = 1,216,585,663.02
  5. Step 5: Solve for x
    x = 1,216,585,663.02/54,362.40
  6. Step 6: Final answer
    x = 22,379.18

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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.