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Finding the Fourth Proportional to 55,891.69, 77,130.73 and 30,398.05

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Solution

The fourth proportional to 55,891.69, 77,130.73 and 30,398.05 is: 41,949.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,891.69 : 77,130.73 = 30,398.05 : x
  2. Step 2: Convert to fraction form
    55,891.69/77,130.73 = 30,398.05/x
  3. Step 3: Cross multiply
    55,891.69x = 77,130.73 × 30,398.05
  4. Step 4: Simplify right side
    55,891.69x = 2,344,623,921.49
  5. Step 5: Solve for x
    x = 2,344,623,921.49/55,891.69
  6. Step 6: Final answer
    x = 41,949.42

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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.