Home / 85,902.19-118,542.80-47,661.59

Finding the Fourth Proportional to 85,902.19, 118,542.80 and 47,661.59

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Solution

The fourth proportional to 85,902.19, 118,542.80 and 47,661.59 is: 65,771.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,902.19 : 118,542.80 = 47,661.59 : x
  2. Step 2: Convert to fraction form
    85,902.19/118,542.80 = 47,661.59/x
  3. Step 3: Cross multiply
    85,902.19x = 118,542.80 × 47,661.59
  4. Step 4: Simplify right side
    85,902.19x = 5,649,938,746.56
  5. Step 5: Solve for x
    x = 5,649,938,746.56/85,902.19
  6. Step 6: Final answer
    x = 65,771.77

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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.