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Finding the Fourth Proportional to 54,363.60, 81,444.60 and 30,920.40

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Solution

The fourth proportional to 54,363.60, 81,444.60 and 30,920.40 is: 46,323.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,363.60 : 81,444.60 = 30,920.40 : x
  2. Step 2: Convert to fraction form
    54,363.60/81,444.60 = 30,920.40/x
  3. Step 3: Cross multiply
    54,363.60x = 81,444.60 × 30,920.40
  4. Step 4: Simplify right side
    54,363.60x = 2,518,299,609.84
  5. Step 5: Solve for x
    x = 2,518,299,609.84/54,363.60
  6. Step 6: Final answer
    x = 46,323.27

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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.