Home / 77,820.40-107,372.64-43,822

Finding the Fourth Proportional to 77,820.40, 107,372.64 and 43,822

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Solution

The fourth proportional to 77,820.40, 107,372.64 and 43,822 is: 60,463.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,820.40 : 107,372.64 = 43,822 : x
  2. Step 2: Convert to fraction form
    77,820.40/107,372.64 = 43,822/x
  3. Step 3: Cross multiply
    77,820.40x = 107,372.64 × 43,822
  4. Step 4: Simplify right side
    77,820.40x = 4,705,283,830.08
  5. Step 5: Solve for x
    x = 4,705,283,830.08/77,820.40
  6. Step 6: Final answer
    x = 60,463.37

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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.