Home / 77,070.73-115,608.49-20,910.62

Finding the Fourth Proportional to 77,070.73, 115,608.49 and 20,910.62

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Solution

The fourth proportional to 77,070.73, 115,608.49 and 20,910.62 is: 31,366.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,070.73 : 115,608.49 = 20,910.62 : x
  2. Step 2: Convert to fraction form
    77,070.73/115,608.49 = 20,910.62/x
  3. Step 3: Cross multiply
    77,070.73x = 115,608.49 × 20,910.62
  4. Step 4: Simplify right side
    77,070.73x = 2,417,445,203.16
  5. Step 5: Solve for x
    x = 2,417,445,203.16/77,070.73
  6. Step 6: Final answer
    x = 31,366.58

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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.