Home / 80,739.36-120,958.38-58,498.38

Finding the Fourth Proportional to 80,739.36, 120,958.38 and 58,498.38

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Solution

The fourth proportional to 80,739.36, 120,958.38 and 58,498.38 is: 87,638.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,739.36 : 120,958.38 = 58,498.38 : x
  2. Step 2: Convert to fraction form
    80,739.36/120,958.38 = 58,498.38/x
  3. Step 3: Cross multiply
    80,739.36x = 120,958.38 × 58,498.38
  4. Step 4: Simplify right side
    80,739.36x = 7,075,869,277.42
  5. Step 5: Solve for x
    x = 7,075,869,277.42/80,739.36
  6. Step 6: Final answer
    x = 87,638.41

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.