Home / 77,637.20-107,109.04-43,638

Finding the Fourth Proportional to 77,637.20, 107,109.04 and 43,638

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Solution

The fourth proportional to 77,637.20, 107,109.04 and 43,638 is: 60,203.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,637.20 : 107,109.04 = 43,638 : x
  2. Step 2: Convert to fraction form
    77,637.20/107,109.04 = 43,638/x
  3. Step 3: Cross multiply
    77,637.20x = 107,109.04 × 43,638
  4. Step 4: Simplify right side
    77,637.20x = 4,674,024,287.52
  5. Step 5: Solve for x
    x = 4,674,024,287.52/77,637.20
  6. Step 6: Final answer
    x = 60,203.41

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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.