Home / 77,213.05-106,555.82-43,220.69

Finding the Fourth Proportional to 77,213.05, 106,555.82 and 43,220.69

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Solution

The fourth proportional to 77,213.05, 106,555.82 and 43,220.69 is: 59,645.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,213.05 : 106,555.82 = 43,220.69 : x
  2. Step 2: Convert to fraction form
    77,213.05/106,555.82 = 43,220.69/x
  3. Step 3: Cross multiply
    77,213.05x = 106,555.82 × 43,220.69
  4. Step 4: Simplify right side
    77,213.05x = 4,605,416,114.20
  5. Step 5: Solve for x
    x = 4,605,416,114.20/77,213.05
  6. Step 6: Final answer
    x = 59,645.57

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.