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Finding the Fourth Proportional to 108,784.65, 163,064.72 and 45,641.44

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Solution

The fourth proportional to 108,784.65, 163,064.72 and 45,641.44 is: 68,415.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,784.65 : 163,064.72 = 45,641.44 : x
  2. Step 2: Convert to fraction form
    108,784.65/163,064.72 = 45,641.44/x
  3. Step 3: Cross multiply
    108,784.65x = 163,064.72 × 45,641.44
  4. Step 4: Simplify right side
    108,784.65x = 7,442,508,748.10
  5. Step 5: Solve for x
    x = 7,442,508,748.10/108,784.65
  6. Step 6: Final answer
    x = 68,415.06

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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.