Home / 31,779.30-47,669.23-8,086.87

Finding the Fourth Proportional to 31,779.30, 47,669.23 and 8,086.87

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Solution

The fourth proportional to 31,779.30, 47,669.23 and 8,086.87 is: 12,130.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,779.30 : 47,669.23 = 8,086.87 : x
  2. Step 2: Convert to fraction form
    31,779.30/47,669.23 = 8,086.87/x
  3. Step 3: Cross multiply
    31,779.30x = 47,669.23 × 8,086.87
  4. Step 4: Simplify right side
    31,779.30x = 385,494,935.71
  5. Step 5: Solve for x
    x = 385,494,935.71/31,779.30
  6. Step 6: Final answer
    x = 12,130.38

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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.