Home / 81,769.10-112,838.40-45,961.07

Finding the Fourth Proportional to 81,769.10, 112,838.40 and 45,961.07

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Solution

The fourth proportional to 81,769.10, 112,838.40 and 45,961.07 is: 63,424.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,769.10 : 112,838.40 = 45,961.07 : x
  2. Step 2: Convert to fraction form
    81,769.10/112,838.40 = 45,961.07/x
  3. Step 3: Cross multiply
    81,769.10x = 112,838.40 × 45,961.07
  4. Step 4: Simplify right side
    81,769.10x = 5,186,173,601.09
  5. Step 5: Solve for x
    x = 5,186,173,601.09/81,769.10
  6. Step 6: Final answer
    x = 63,424.61

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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.