Home / 99,680.12-137,551.62-56,079.24

Finding the Fourth Proportional to 99,680.12, 137,551.62 and 56,079.24

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Solution

The fourth proportional to 99,680.12, 137,551.62 and 56,079.24 is: 77,385.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,680.12 : 137,551.62 = 56,079.24 : x
  2. Step 2: Convert to fraction form
    99,680.12/137,551.62 = 56,079.24/x
  3. Step 3: Cross multiply
    99,680.12x = 137,551.62 × 56,079.24
  4. Step 4: Simplify right side
    99,680.12x = 7,713,790,310.37
  5. Step 5: Solve for x
    x = 7,713,790,310.37/99,680.12
  6. Step 6: Final answer
    x = 77,385.44

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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.