Home / 74,657.85-102,991.54-47,778.81

Finding the Fourth Proportional to 74,657.85, 102,991.54 and 47,778.81

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Solution

The fourth proportional to 74,657.85, 102,991.54 and 47,778.81 is: 65,911.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,657.85 : 102,991.54 = 47,778.81 : x
  2. Step 2: Convert to fraction form
    74,657.85/102,991.54 = 47,778.81/x
  3. Step 3: Cross multiply
    74,657.85x = 102,991.54 × 47,778.81
  4. Step 4: Simplify right side
    74,657.85x = 4,920,813,221.27
  5. Step 5: Solve for x
    x = 4,920,813,221.27/74,657.85
  6. Step 6: Final answer
    x = 65,911.53

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.