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Finding the Fourth Proportional to 85,854.54, 118,479.26 and 47,619.94

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Solution

The fourth proportional to 85,854.54, 118,479.26 and 47,619.94 is: 65,715.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,854.54 : 118,479.26 = 47,619.94 : x
  2. Step 2: Convert to fraction form
    85,854.54/118,479.26 = 47,619.94/x
  3. Step 3: Cross multiply
    85,854.54x = 118,479.26 × 47,619.94
  4. Step 4: Simplify right side
    85,854.54x = 5,641,975,252.44
  5. Step 5: Solve for x
    x = 5,641,975,252.44/85,854.54
  6. Step 6: Final answer
    x = 65,715.51

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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.