Home / 77,820.23-107,390.77-43,828.79

Finding the Fourth Proportional to 77,820.23, 107,390.77 and 43,828.79

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Solution

The fourth proportional to 77,820.23, 107,390.77 and 43,828.79 is: 60,483.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,820.23 : 107,390.77 = 43,828.79 : x
  2. Step 2: Convert to fraction form
    77,820.23/107,390.77 = 43,828.79/x
  3. Step 3: Cross multiply
    77,820.23x = 107,390.77 × 43,828.79
  4. Step 4: Simplify right side
    77,820.23x = 4,706,806,859.74
  5. Step 5: Solve for x
    x = 4,706,806,859.74/77,820.23
  6. Step 6: Final answer
    x = 60,483.07

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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.