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Finding the Fourth Proportional to 54,259.20, 81,465.60 and 42,585.60

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Solution

The fourth proportional to 54,259.20, 81,465.60 and 42,585.60 is: 63,938.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,259.20 : 81,465.60 = 42,585.60 : x
  2. Step 2: Convert to fraction form
    54,259.20/81,465.60 = 42,585.60/x
  3. Step 3: Cross multiply
    54,259.20x = 81,465.60 × 42,585.60
  4. Step 4: Simplify right side
    54,259.20x = 3,469,261,455.36
  5. Step 5: Solve for x
    x = 3,469,261,455.36/54,259.20
  6. Step 6: Final answer
    x = 63,938.68

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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.