Home / 85,982.87-118,650.58-47,740.45

Finding the Fourth Proportional to 85,982.87, 118,650.58 and 47,740.45

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Solution

The fourth proportional to 85,982.87, 118,650.58 and 47,740.45 is: 65,878.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,982.87 : 118,650.58 = 47,740.45 : x
  2. Step 2: Convert to fraction form
    85,982.87/118,650.58 = 47,740.45/x
  3. Step 3: Cross multiply
    85,982.87x = 118,650.58 × 47,740.45
  4. Step 4: Simplify right side
    85,982.87x = 5,664,432,081.96
  5. Step 5: Solve for x
    x = 5,664,432,081.96/85,982.87
  6. Step 6: Final answer
    x = 65,878.61

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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.