Home / 103,531.92-155,301.36-28,645.80

Finding the Fourth Proportional to 103,531.92, 155,301.36 and 28,645.80

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Solution

The fourth proportional to 103,531.92, 155,301.36 and 28,645.80 is: 42,969.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,531.92 : 155,301.36 = 28,645.80 : x
  2. Step 2: Convert to fraction form
    103,531.92/155,301.36 = 28,645.80/x
  3. Step 3: Cross multiply
    103,531.92x = 155,301.36 × 28,645.80
  4. Step 4: Simplify right side
    103,531.92x = 4,448,731,698.29
  5. Step 5: Solve for x
    x = 4,448,731,698.29/103,531.92
  6. Step 6: Final answer
    x = 42,969.66

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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.