Home / 85,717.52-118,289.40-47,992.40

Finding the Fourth Proportional to 85,717.52, 118,289.40 and 47,992.40

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Solution

The fourth proportional to 85,717.52, 118,289.40 and 47,992.40 is: 66,229.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,717.52 : 118,289.40 = 47,992.40 : x
  2. Step 2: Convert to fraction form
    85,717.52/118,289.40 = 47,992.40/x
  3. Step 3: Cross multiply
    85,717.52x = 118,289.40 × 47,992.40
  4. Step 4: Simplify right side
    85,717.52x = 5,676,992,200.56
  5. Step 5: Solve for x
    x = 5,676,992,200.56/85,717.52
  6. Step 6: Final answer
    x = 66,229.08

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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.