Home / 85,865.94-118,428.03-51,838.86

Finding the Fourth Proportional to 85,865.94, 118,428.03 and 51,838.86

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Solution

The fourth proportional to 85,865.94, 118,428.03 and 51,838.86 is: 71,497.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,865.94 : 118,428.03 = 51,838.86 : x
  2. Step 2: Convert to fraction form
    85,865.94/118,428.03 = 51,838.86/x
  3. Step 3: Cross multiply
    85,865.94x = 118,428.03 × 51,838.86
  4. Step 4: Simplify right side
    85,865.94x = 6,139,174,067.25
  5. Step 5: Solve for x
    x = 6,139,174,067.25/85,865.94
  6. Step 6: Final answer
    x = 71,497.20

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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.