Home / 81,368.69-122,053.43-28,778.22

Finding the Fourth Proportional to 81,368.69, 122,053.43 and 28,778.22

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Solution

The fourth proportional to 81,368.69, 122,053.43 and 28,778.22 is: 43,167.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,368.69 : 122,053.43 = 28,778.22 : x
  2. Step 2: Convert to fraction form
    81,368.69/122,053.43 = 28,778.22/x
  3. Step 3: Cross multiply
    81,368.69x = 122,053.43 × 28,778.22
  4. Step 4: Simplify right side
    81,368.69x = 3,512,480,532.24
  5. Step 5: Solve for x
    x = 3,512,480,532.24/81,368.69
  6. Step 6: Final answer
    x = 43,167.47

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1.5x scale

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.