Home / 103,621.48-155,385.74-47,479.97

Finding the Fourth Proportional to 103,621.48, 155,385.74 and 47,479.97

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Solution

The fourth proportional to 103,621.48, 155,385.74 and 47,479.97 is: 71,198.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,621.48 : 155,385.74 = 47,479.97 : x
  2. Step 2: Convert to fraction form
    103,621.48/155,385.74 = 47,479.97/x
  3. Step 3: Cross multiply
    103,621.48x = 155,385.74 × 47,479.97
  4. Step 4: Simplify right side
    103,621.48x = 7,377,710,780.79
  5. Step 5: Solve for x
    x = 7,377,710,780.79/103,621.48
  6. Step 6: Final answer
    x = 71,198.66

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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.