Home / 103,619.85-155,511.79-40,470.23

Finding the Fourth Proportional to 103,619.85, 155,511.79 and 40,470.23

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Solution

The fourth proportional to 103,619.85, 155,511.79 and 40,470.23 is: 60,737.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,619.85 : 155,511.79 = 40,470.23 : x
  2. Step 2: Convert to fraction form
    103,619.85/155,511.79 = 40,470.23/x
  3. Step 3: Cross multiply
    103,619.85x = 155,511.79 × 40,470.23
  4. Step 4: Simplify right side
    103,619.85x = 6,293,597,909.01
  5. Step 5: Solve for x
    x = 6,293,597,909.01/103,619.85
  6. Step 6: Final answer
    x = 60,737.38

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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.