Home / 87,779.32-131,637.86-31,604.36

Finding the Fourth Proportional to 87,779.32, 131,637.86 and 31,604.36

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Solution

The fourth proportional to 87,779.32, 131,637.86 and 31,604.36 is: 47,395.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,779.32 : 131,637.86 = 31,604.36 : x
  2. Step 2: Convert to fraction form
    87,779.32/131,637.86 = 31,604.36/x
  3. Step 3: Cross multiply
    87,779.32x = 131,637.86 × 31,604.36
  4. Step 4: Simplify right side
    87,779.32x = 4,160,330,317.07
  5. Step 5: Solve for x
    x = 4,160,330,317.07/87,779.32
  6. Step 6: Final answer
    x = 47,395.34

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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.