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Finding the Fourth Proportional to 108,710.20, 163,065.30 and 49,661.20

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Solution

The fourth proportional to 108,710.20, 163,065.30 and 49,661.20 is: 74,491.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,710.20 : 163,065.30 = 49,661.20 : x
  2. Step 2: Convert to fraction form
    108,710.20/163,065.30 = 49,661.20/x
  3. Step 3: Cross multiply
    108,710.20x = 163,065.30 × 49,661.20
  4. Step 4: Simplify right side
    108,710.20x = 8,098,018,476.36
  5. Step 5: Solve for x
    x = 8,098,018,476.36/108,710.20
  6. Step 6: Final answer
    x = 74,491.80

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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.