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Finding the Fourth Proportional to 60,781.20, 91,179.08 and 18,655.77

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Solution

The fourth proportional to 60,781.20, 91,179.08 and 18,655.77 is: 27,985.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,781.20 : 91,179.08 = 18,655.77 : x
  2. Step 2: Convert to fraction form
    60,781.20/91,179.08 = 18,655.77/x
  3. Step 3: Cross multiply
    60,781.20x = 91,179.08 × 18,655.77
  4. Step 4: Simplify right side
    60,781.20x = 1,701,015,945.29
  5. Step 5: Solve for x
    x = 1,701,015,945.29/60,781.20
  6. Step 6: Final answer
    x = 27,985.89

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1.5x scale

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.