Home / 49,869.90-74,761.05-20,312.58

Finding the Fourth Proportional to 49,869.90, 74,761.05 and 20,312.58

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Solution

The fourth proportional to 49,869.90, 74,761.05 and 20,312.58 is: 30,451.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    49,869.90 : 74,761.05 = 20,312.58 : x
  2. Step 2: Convert to fraction form
    49,869.90/74,761.05 = 20,312.58/x
  3. Step 3: Cross multiply
    49,869.90x = 74,761.05 × 20,312.58
  4. Step 4: Simplify right side
    49,869.90x = 1,518,589,809.01
  5. Step 5: Solve for x
    x = 1,518,589,809.01/49,869.90
  6. Step 6: Final answer
    x = 30,451.03

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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.