Home / 71,063.18-106,576.20-21,129.84

Finding the Fourth Proportional to 71,063.18, 106,576.20 and 21,129.84

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Solution

The fourth proportional to 71,063.18, 106,576.20 and 21,129.84 is: 31,689.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,063.18 : 106,576.20 = 21,129.84 : x
  2. Step 2: Convert to fraction form
    71,063.18/106,576.20 = 21,129.84/x
  3. Step 3: Cross multiply
    71,063.18x = 106,576.20 × 21,129.84
  4. Step 4: Simplify right side
    71,063.18x = 2,251,938,053.81
  5. Step 5: Solve for x
    x = 2,251,938,053.81/71,063.18
  6. Step 6: Final answer
    x = 31,689.24

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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.