Home / 75,739.40-113,609.10-31,360.04

Finding the Fourth Proportional to 75,739.40, 113,609.10 and 31,360.04

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Solution

The fourth proportional to 75,739.40, 113,609.10 and 31,360.04 is: 47,040.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,739.40 : 113,609.10 = 31,360.04 : x
  2. Step 2: Convert to fraction form
    75,739.40/113,609.10 = 31,360.04/x
  3. Step 3: Cross multiply
    75,739.40x = 113,609.10 × 31,360.04
  4. Step 4: Simplify right side
    75,739.40x = 3,562,785,920.36
  5. Step 5: Solve for x
    x = 3,562,785,920.36/75,739.40
  6. Step 6: Final answer
    x = 47,040.06

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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.