Home / 99,747.77-137,651.21-56,727.28

Finding the Fourth Proportional to 99,747.77, 137,651.21 and 56,727.28

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Solution

The fourth proportional to 99,747.77, 137,651.21 and 56,727.28 is: 78,283.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,747.77 : 137,651.21 = 56,727.28 : x
  2. Step 2: Convert to fraction form
    99,747.77/137,651.21 = 56,727.28/x
  3. Step 3: Cross multiply
    99,747.77x = 137,651.21 × 56,727.28
  4. Step 4: Simplify right side
    99,747.77x = 7,808,578,377.97
  5. Step 5: Solve for x
    x = 7,808,578,377.97/99,747.77
  6. Step 6: Final answer
    x = 78,283.24

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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.