Home / 87,870.99-131,779.23-31,703.80

Finding the Fourth Proportional to 87,870.99, 131,779.23 and 31,703.80

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Solution

The fourth proportional to 87,870.99, 131,779.23 and 31,703.80 is: 47,545.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,870.99 : 131,779.23 = 31,703.80 : x
  2. Step 2: Convert to fraction form
    87,870.99/131,779.23 = 31,703.80/x
  3. Step 3: Cross multiply
    87,870.99x = 131,779.23 × 31,703.80
  4. Step 4: Simplify right side
    87,870.99x = 4,177,902,352.07
  5. Step 5: Solve for x
    x = 4,177,902,352.07/87,870.99
  6. Step 6: Final answer
    x = 47,545.87

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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.