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Finding the Fourth Proportional to 54,157.60, 81,159.60 and 40,007.20

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Solution

The fourth proportional to 54,157.60, 81,159.60 and 40,007.20 is: 59,954.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,157.60 : 81,159.60 = 40,007.20 : x
  2. Step 2: Convert to fraction form
    54,157.60/81,159.60 = 40,007.20/x
  3. Step 3: Cross multiply
    54,157.60x = 81,159.60 × 40,007.20
  4. Step 4: Simplify right side
    54,157.60x = 3,246,968,349.12
  5. Step 5: Solve for x
    x = 3,246,968,349.12/54,157.60
  6. Step 6: Final answer
    x = 59,954.07

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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.