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Finding the Fourth Proportional to 77,519.97, 106,959.29 and 43,985.97

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Solution

The fourth proportional to 77,519.97, 106,959.29 and 43,985.97 is: 60,690.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,519.97 : 106,959.29 = 43,985.97 : x
  2. Step 2: Convert to fraction form
    77,519.97/106,959.29 = 43,985.97/x
  3. Step 3: Cross multiply
    77,519.97x = 106,959.29 × 43,985.97
  4. Step 4: Simplify right side
    77,519.97x = 4,704,707,901.23
  5. Step 5: Solve for x
    x = 4,704,707,901.23/77,519.97
  6. Step 6: Final answer
    x = 60,690.27

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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.