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Finding the Fourth Proportional to 64,568.40, 89,109.96 and 37,719.54

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Solution

The fourth proportional to 64,568.40, 89,109.96 and 37,719.54 is: 52,056.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,568.40 : 89,109.96 = 37,719.54 : x
  2. Step 2: Convert to fraction form
    64,568.40/89,109.96 = 37,719.54/x
  3. Step 3: Cross multiply
    64,568.40x = 89,109.96 × 37,719.54
  4. Step 4: Simplify right side
    64,568.40x = 3,361,186,700.62
  5. Step 5: Solve for x
    x = 3,361,186,700.62/64,568.40
  6. Step 6: Final answer
    x = 52,056.22

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.