Home / 99,065.72-136,696.19-56,616.05

Finding the Fourth Proportional to 99,065.72, 136,696.19 and 56,616.05

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Solution

The fourth proportional to 99,065.72, 136,696.19 and 56,616.05 is: 78,121.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,065.72 : 136,696.19 = 56,616.05 : x
  2. Step 2: Convert to fraction form
    99,065.72/136,696.19 = 56,616.05/x
  3. Step 3: Cross multiply
    99,065.72x = 136,696.19 × 56,616.05
  4. Step 4: Simplify right side
    99,065.72x = 7,739,197,361.29
  5. Step 5: Solve for x
    x = 7,739,197,361.29/99,065.72
  6. Step 6: Final answer
    x = 78,121.85

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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.