Home / 71,030.40-106,508.34-21,103.62

Finding the Fourth Proportional to 71,030.40, 106,508.34 and 21,103.62

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Solution

The fourth proportional to 71,030.40, 106,508.34 and 21,103.62 is: 31,644.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,030.40 : 106,508.34 = 21,103.62 : x
  2. Step 2: Convert to fraction form
    71,030.40/106,508.34 = 21,103.62/x
  3. Step 3: Cross multiply
    71,030.40x = 106,508.34 × 21,103.62
  4. Step 4: Simplify right side
    71,030.40x = 2,247,711,534.19
  5. Step 5: Solve for x
    x = 2,247,711,534.19/71,030.40
  6. Step 6: Final answer
    x = 31,644.36

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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.