Home / 85,911.35-118,558.32-47,671.05

Finding the Fourth Proportional to 85,911.35, 118,558.32 and 47,671.05

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Solution

The fourth proportional to 85,911.35, 118,558.32 and 47,671.05 is: 65,786.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,911.35 : 118,558.32 = 47,671.05 : x
  2. Step 2: Convert to fraction form
    85,911.35/118,558.32 = 47,671.05/x
  3. Step 3: Cross multiply
    85,911.35x = 118,558.32 × 47,671.05
  4. Step 4: Simplify right side
    85,911.35x = 5,651,799,199.57
  5. Step 5: Solve for x
    x = 5,651,799,199.57/85,911.35
  6. Step 6: Final answer
    x = 65,786.41

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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.