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Finding the Fourth Proportional to 108,877.80, 163,335.81 and 49,719.45

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Solution

The fourth proportional to 108,877.80, 163,335.81 and 49,719.45 is: 74,587.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,877.80 : 163,335.81 = 49,719.45 : x
  2. Step 2: Convert to fraction form
    108,877.80/163,335.81 = 49,719.45/x
  3. Step 3: Cross multiply
    108,877.80x = 163,335.81 × 49,719.45
  4. Step 4: Simplify right side
    108,877.80x = 8,120,966,638.50
  5. Step 5: Solve for x
    x = 8,120,966,638.50/108,877.80
  6. Step 6: Final answer
    x = 74,587.90

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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.