Home / 71,018.09-106,543.57-21,097.11

Finding the Fourth Proportional to 71,018.09, 106,543.57 and 21,097.11

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Solution

The fourth proportional to 71,018.09, 106,543.57 and 21,097.11 is: 31,650.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,018.09 : 106,543.57 = 21,097.11 : x
  2. Step 2: Convert to fraction form
    71,018.09/106,543.57 = 21,097.11/x
  3. Step 3: Cross multiply
    71,018.09x = 106,543.57 × 21,097.11
  4. Step 4: Simplify right side
    71,018.09x = 2,247,761,416.08
  5. Step 5: Solve for x
    x = 2,247,761,416.08/71,018.09
  6. Step 6: Final answer
    x = 31,650.55

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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.