Home / 85,868.09-118,499.19-51,871.86

Finding the Fourth Proportional to 85,868.09, 118,499.19 and 51,871.86

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Solution

The fourth proportional to 85,868.09, 118,499.19 and 51,871.86 is: 71,583.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,868.09 : 118,499.19 = 51,871.86 : x
  2. Step 2: Convert to fraction form
    85,868.09/118,499.19 = 51,871.86/x
  3. Step 3: Cross multiply
    85,868.09x = 118,499.19 × 51,871.86
  4. Step 4: Simplify right side
    85,868.09x = 6,146,773,393.79
  5. Step 5: Solve for x
    x = 6,146,773,393.79/85,868.09
  6. Step 6: Final answer
    x = 71,583.91

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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.