Home / 74,412.30-111,475.89-71,911.02

Finding the Fourth Proportional to 74,412.30, 111,475.89 and 71,911.02

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Solution

The fourth proportional to 74,412.30, 111,475.89 and 71,911.02 is: 107,728.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,412.30 : 111,475.89 = 71,911.02 : x
  2. Step 2: Convert to fraction form
    74,412.30/111,475.89 = 71,911.02/x
  3. Step 3: Cross multiply
    74,412.30x = 111,475.89 × 71,911.02
  4. Step 4: Simplify right side
    74,412.30x = 8,016,344,955.31
  5. Step 5: Solve for x
    x = 8,016,344,955.31/74,412.30
  6. Step 6: Final answer
    x = 107,728.76

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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.