Home / 68,779.43-103,148.59-20,746.03

Finding the Fourth Proportional to 68,779.43, 103,148.59 and 20,746.03

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Solution

The fourth proportional to 68,779.43, 103,148.59 and 20,746.03 is: 31,112.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,779.43 : 103,148.59 = 20,746.03 : x
  2. Step 2: Convert to fraction form
    68,779.43/103,148.59 = 20,746.03/x
  3. Step 3: Cross multiply
    68,779.43x = 103,148.59 × 20,746.03
  4. Step 4: Simplify right side
    68,779.43x = 2,139,923,123.12
  5. Step 5: Solve for x
    x = 2,139,923,123.12/68,779.43
  6. Step 6: Final answer
    x = 31,112.84

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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.