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Finding the Fourth Proportional to 312,720.67, 469,081.01 and 76,063.51

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Solution

The fourth proportional to 312,720.67, 469,081.01 and 76,063.51 is: 114,095.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,720.67 : 469,081.01 = 76,063.51 : x
  2. Step 2: Convert to fraction form
    312,720.67/469,081.01 = 76,063.51/x
  3. Step 3: Cross multiply
    312,720.67x = 469,081.01 × 76,063.51
  4. Step 4: Simplify right side
    312,720.67x = 35,679,948,094.95
  5. Step 5: Solve for x
    x = 35,679,948,094.95/312,720.67
  6. Step 6: Final answer
    x = 114,095.27

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Similar ratio
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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.