Home / 81,813.28-122,720.08-22,649.13

Finding the Fourth Proportional to 81,813.28, 122,720.08 and 22,649.13

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Solution

The fourth proportional to 81,813.28, 122,720.08 and 22,649.13 is: 33,973.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,813.28 : 122,720.08 = 22,649.13 : x
  2. Step 2: Convert to fraction form
    81,813.28/122,720.08 = 22,649.13/x
  3. Step 3: Cross multiply
    81,813.28x = 122,720.08 × 22,649.13
  4. Step 4: Simplify right side
    81,813.28x = 2,779,503,045.53
  5. Step 5: Solve for x
    x = 2,779,503,045.53/81,813.28
  6. Step 6: Final answer
    x = 33,973.74

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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.