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Finding the Fourth Proportional to 79,642.33, 109,904.39 and 43,342.23

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Solution

The fourth proportional to 79,642.33, 109,904.39 and 43,342.23 is: 59,811.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,642.33 : 109,904.39 = 43,342.23 : x
  2. Step 2: Convert to fraction form
    79,642.33/109,904.39 = 43,342.23/x
  3. Step 3: Cross multiply
    79,642.33x = 109,904.39 × 43,342.23
  4. Step 4: Simplify right side
    79,642.33x = 4,763,501,349.39
  5. Step 5: Solve for x
    x = 4,763,501,349.39/79,642.33
  6. Step 6: Final answer
    x = 59,811.18

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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.