Home / 77,995.28-107,638.40-43,991.36

Finding the Fourth Proportional to 77,995.28, 107,638.40 and 43,991.36

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Solution

The fourth proportional to 77,995.28, 107,638.40 and 43,991.36 is: 60,710.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,995.28 : 107,638.40 = 43,991.36 : x
  2. Step 2: Convert to fraction form
    77,995.28/107,638.40 = 43,991.36/x
  3. Step 3: Cross multiply
    77,995.28x = 107,638.40 × 43,991.36
  4. Step 4: Simplify right side
    77,995.28x = 4,735,159,604.22
  5. Step 5: Solve for x
    x = 4,735,159,604.22/77,995.28
  6. Step 6: Final answer
    x = 60,710.85

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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.