Home / 85,721.16-118,353.00-53,504.86

Finding the Fourth Proportional to 85,721.16, 118,353.00 and 53,504.86

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Solution

The fourth proportional to 85,721.16, 118,353.00 and 53,504.86 is: 73,872.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,721.16 : 118,353.00 = 53,504.86 : x
  2. Step 2: Convert to fraction form
    85,721.16/118,353.00 = 53,504.86/x
  3. Step 3: Cross multiply
    85,721.16x = 118,353.00 × 53,504.86
  4. Step 4: Simplify right side
    85,721.16x = 6,332,460,378.43
  5. Step 5: Solve for x
    x = 6,332,460,378.43/85,721.16
  6. Step 6: Final answer
    x = 73,872.78

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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.