Home / 81,911.09-122,866.69-22,746.77

Finding the Fourth Proportional to 81,911.09, 122,866.69 and 22,746.77

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Solution

The fourth proportional to 81,911.09, 122,866.69 and 22,746.77 is: 34,120.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,911.09 : 122,866.69 = 22,746.77 : x
  2. Step 2: Convert to fraction form
    81,911.09/122,866.69 = 22,746.77/x
  3. Step 3: Cross multiply
    81,911.09x = 122,866.69 × 22,746.77
  4. Step 4: Simplify right side
    81,911.09x = 2,794,819,666.89
  5. Step 5: Solve for x
    x = 2,794,819,666.89/81,911.09
  6. Step 6: Final answer
    x = 34,120.16

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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.