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Finding the Fourth Proportional to 103,677.80, 155,449.74 and 56,918.12

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Solution

The fourth proportional to 103,677.80, 155,449.74 and 56,918.12 is: 85,340.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,677.80 : 155,449.74 = 56,918.12 : x
  2. Step 2: Convert to fraction form
    103,677.80/155,449.74 = 56,918.12/x
  3. Step 3: Cross multiply
    103,677.80x = 155,449.74 × 56,918.12
  4. Step 4: Simplify right side
    103,677.80x = 8,847,906,955.29
  5. Step 5: Solve for x
    x = 8,847,906,955.29/103,677.80
  6. Step 6: Final answer
    x = 85,340.42

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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.