Home / 89,128.17-122,995.40-53,297.82

Finding the Fourth Proportional to 89,128.17, 122,995.40 and 53,297.82

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Solution

The fourth proportional to 89,128.17, 122,995.40 and 53,297.82 is: 73,550.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,128.17 : 122,995.40 = 53,297.82 : x
  2. Step 2: Convert to fraction form
    89,128.17/122,995.40 = 53,297.82/x
  3. Step 3: Cross multiply
    89,128.17x = 122,995.40 × 53,297.82
  4. Step 4: Simplify right side
    89,128.17x = 6,555,386,423.54
  5. Step 5: Solve for x
    x = 6,555,386,423.54/89,128.17
  6. Step 6: Final answer
    x = 73,550.11

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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.