Home / 71,069.19-106,585.20-21,135.84

Finding the Fourth Proportional to 71,069.19, 106,585.20 and 21,135.84

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Solution

The fourth proportional to 71,069.19, 106,585.20 and 21,135.84 is: 31,698.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,069.19 : 106,585.20 = 21,135.84 : x
  2. Step 2: Convert to fraction form
    71,069.19/106,585.20 = 21,135.84/x
  3. Step 3: Cross multiply
    71,069.19x = 106,585.20 × 21,135.84
  4. Step 4: Simplify right side
    71,069.19x = 2,252,767,733.57
  5. Step 5: Solve for x
    x = 2,252,767,733.57/71,069.19
  6. Step 6: Final answer
    x = 31,698.23

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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.