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Finding the Fourth Proportional to 54,349.60, 81,423.60 and 30,906.40

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Solution

The fourth proportional to 54,349.60, 81,423.60 and 30,906.40 is: 46,302.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,349.60 : 81,423.60 = 30,906.40 : x
  2. Step 2: Convert to fraction form
    54,349.60/81,423.60 = 30,906.40/x
  3. Step 3: Cross multiply
    54,349.60x = 81,423.60 × 30,906.40
  4. Step 4: Simplify right side
    54,349.60x = 2,516,510,351.04
  5. Step 5: Solve for x
    x = 2,516,510,351.04/54,349.60
  6. Step 6: Final answer
    x = 46,302.28

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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.