Home / 103,790.30-155,663.85-28,891.10

Finding the Fourth Proportional to 103,790.30, 155,663.85 and 28,891.10

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Solution

The fourth proportional to 103,790.30, 155,663.85 and 28,891.10 is: 43,330.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,790.30 : 155,663.85 = 28,891.10 : x
  2. Step 2: Convert to fraction form
    103,790.30/155,663.85 = 28,891.10/x
  3. Step 3: Cross multiply
    103,790.30x = 155,663.85 × 28,891.10
  4. Step 4: Simplify right side
    103,790.30x = 4,497,299,856.74
  5. Step 5: Solve for x
    x = 4,497,299,856.74/103,790.30
  6. Step 6: Final answer
    x = 43,330.64

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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.