Home / 99,490.97-137,290.61-56,471.34

Finding the Fourth Proportional to 99,490.97, 137,290.61 and 56,471.34

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Solution

The fourth proportional to 99,490.97, 137,290.61 and 56,471.34 is: 77,926.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,490.97 : 137,290.61 = 56,471.34 : x
  2. Step 2: Convert to fraction form
    99,490.97/137,290.61 = 56,471.34/x
  3. Step 3: Cross multiply
    99,490.97x = 137,290.61 × 56,471.34
  4. Step 4: Simplify right side
    99,490.97x = 7,752,984,716.12
  5. Step 5: Solve for x
    x = 7,752,984,716.12/99,490.97
  6. Step 6: Final answer
    x = 77,926.52

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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.