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Finding the Fourth Proportional to 108,880.81, 163,240.72 and 45,719.64

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Solution

The fourth proportional to 108,880.81, 163,240.72 and 45,719.64 is: 68,545.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,880.81 : 163,240.72 = 45,719.64 : x
  2. Step 2: Convert to fraction form
    108,880.81/163,240.72 = 45,719.64/x
  3. Step 3: Cross multiply
    108,880.81x = 163,240.72 × 45,719.64
  4. Step 4: Simplify right side
    108,880.81x = 7,463,306,837.44
  5. Step 5: Solve for x
    x = 7,463,306,837.44/108,880.81
  6. Step 6: Final answer
    x = 68,545.66

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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.