Home / 78,997.29-109,016.22-43,187.28

Finding the Fourth Proportional to 78,997.29, 109,016.22 and 43,187.28

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Solution

The fourth proportional to 78,997.29, 109,016.22 and 43,187.28 is: 59,598.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,997.29 : 109,016.22 = 43,187.28 : x
  2. Step 2: Convert to fraction form
    78,997.29/109,016.22 = 43,187.28/x
  3. Step 3: Cross multiply
    78,997.29x = 109,016.22 × 43,187.28
  4. Step 4: Simplify right side
    78,997.29x = 4,708,114,017.68
  5. Step 5: Solve for x
    x = 4,708,114,017.68/78,997.29
  6. Step 6: Final answer
    x = 59,598.42

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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.