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Finding the Fourth Proportional to 77,616.96, 107,104.32 and 43,617.60

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Solution

The fourth proportional to 77,616.96, 107,104.32 and 43,617.60 is: 60,188.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,616.96 : 107,104.32 = 43,617.60 : x
  2. Step 2: Convert to fraction form
    77,616.96/107,104.32 = 43,617.60/x
  3. Step 3: Cross multiply
    77,616.96x = 107,104.32 × 43,617.60
  4. Step 4: Simplify right side
    77,616.96x = 4,671,633,388.03
  5. Step 5: Solve for x
    x = 4,671,633,388.03/77,616.96
  6. Step 6: Final answer
    x = 60,188.31

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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.