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Finding the Fourth Proportional to 60,781.77, 83,778.44 and 40,631.31

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Solution

The fourth proportional to 60,781.77, 83,778.44 and 40,631.31 is: 56,004.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,781.77 : 83,778.44 = 40,631.31 : x
  2. Step 2: Convert to fraction form
    60,781.77/83,778.44 = 40,631.31/x
  3. Step 3: Cross multiply
    60,781.77x = 83,778.44 × 40,631.31
  4. Step 4: Simplify right side
    60,781.77x = 3,404,027,563.80
  5. Step 5: Solve for x
    x = 3,404,027,563.80/60,781.77
  6. Step 6: Final answer
    x = 56,004.09

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.