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Finding the Fourth Proportional to 57,644.70, 86,596.65 and 40,148.70

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Solution

The fourth proportional to 57,644.70, 86,596.65 and 40,148.70 is: 60,313.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,644.70 : 86,596.65 = 40,148.70 : x
  2. Step 2: Convert to fraction form
    57,644.70/86,596.65 = 40,148.70/x
  3. Step 3: Cross multiply
    57,644.70x = 86,596.65 × 40,148.70
  4. Step 4: Simplify right side
    57,644.70x = 3,476,742,921.86
  5. Step 5: Solve for x
    x = 3,476,742,921.86/57,644.70
  6. Step 6: Final answer
    x = 60,313.31

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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.