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Finding the Fourth Proportional to 108,449.28, 162,639.36 and 34,560

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Solution

The fourth proportional to 108,449.28, 162,639.36 and 34,560 is: 51,828.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,449.28 : 162,639.36 = 34,560 : x
  2. Step 2: Convert to fraction form
    108,449.28/162,639.36 = 34,560/x
  3. Step 3: Cross multiply
    108,449.28x = 162,639.36 × 34,560
  4. Step 4: Simplify right side
    108,449.28x = 5,620,816,281.60
  5. Step 5: Solve for x
    x = 5,620,816,281.60/108,449.28
  6. Step 6: Final answer
    x = 51,828.99

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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.