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Finding the Fourth Proportional to 108,963.40, 163,502.70 and 49,808.20

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Solution

The fourth proportional to 108,963.40, 163,502.70 and 49,808.20 is: 74,738.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,963.40 : 163,502.70 = 49,808.20 : x
  2. Step 2: Convert to fraction form
    108,963.40/163,502.70 = 49,808.20/x
  3. Step 3: Cross multiply
    108,963.40x = 163,502.70 × 49,808.20
  4. Step 4: Simplify right side
    108,963.40x = 8,143,775,182.14
  5. Step 5: Solve for x
    x = 8,143,775,182.14/108,963.40
  6. Step 6: Final answer
    x = 74,738.63

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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.