Home / 79,629.56-109,893.33-45,643.70

Finding the Fourth Proportional to 79,629.56, 109,893.33 and 45,643.70

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Solution

The fourth proportional to 79,629.56, 109,893.33 and 45,643.70 is: 62,990.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,629.56 : 109,893.33 = 45,643.70 : x
  2. Step 2: Convert to fraction form
    79,629.56/109,893.33 = 45,643.70/x
  3. Step 3: Cross multiply
    79,629.56x = 109,893.33 × 45,643.70
  4. Step 4: Simplify right side
    79,629.56x = 5,015,938,186.52
  5. Step 5: Solve for x
    x = 5,015,938,186.52/79,629.56
  6. Step 6: Final answer
    x = 62,990.91

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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.