Home / 81,808.07-122,698.41-22,649.72

Finding the Fourth Proportional to 81,808.07, 122,698.41 and 22,649.72

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Solution

The fourth proportional to 81,808.07, 122,698.41 and 22,649.72 is: 33,970.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,808.07 : 122,698.41 = 22,649.72 : x
  2. Step 2: Convert to fraction form
    81,808.07/122,698.41 = 22,649.72/x
  3. Step 3: Cross multiply
    81,808.07x = 122,698.41 × 22,649.72
  4. Step 4: Simplify right side
    81,808.07x = 2,779,084,017.45
  5. Step 5: Solve for x
    x = 2,779,084,017.45/81,808.07
  6. Step 6: Final answer
    x = 33,970.78

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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.