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Finding the Fourth Proportional to 79,505.97, 109,602.63 and 55,558.32

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Solution

The fourth proportional to 79,505.97, 109,602.63 and 55,558.32 is: 76,589.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,505.97 : 109,602.63 = 55,558.32 : x
  2. Step 2: Convert to fraction form
    79,505.97/109,602.63 = 55,558.32/x
  3. Step 3: Cross multiply
    79,505.97x = 109,602.63 × 55,558.32
  4. Step 4: Simplify right side
    79,505.97x = 6,089,337,990.38
  5. Step 5: Solve for x
    x = 6,089,337,990.38/79,505.97
  6. Step 6: Final answer
    x = 76,589.69

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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.