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Finding the Fourth Proportional to 64,986.81, 97,258.42 and 54,468.71

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Solution

The fourth proportional to 64,986.81, 97,258.42 and 54,468.71 is: 81,517.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,986.81 : 97,258.42 = 54,468.71 : x
  2. Step 2: Convert to fraction form
    64,986.81/97,258.42 = 54,468.71/x
  3. Step 3: Cross multiply
    64,986.81x = 97,258.42 × 54,468.71
  4. Step 4: Simplify right side
    64,986.81x = 5,297,540,674.04
  5. Step 5: Solve for x
    x = 5,297,540,674.04/64,986.81
  6. Step 6: Final answer
    x = 81,517.17

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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.