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Finding the Fourth Proportional to 71,176.86, 98,216.55 and 39,340.62

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Solution

The fourth proportional to 71,176.86, 98,216.55 and 39,340.62 is: 54,285.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,176.86 : 98,216.55 = 39,340.62 : x
  2. Step 2: Convert to fraction form
    71,176.86/98,216.55 = 39,340.62/x
  3. Step 3: Cross multiply
    71,176.86x = 98,216.55 × 39,340.62
  4. Step 4: Simplify right side
    71,176.86x = 3,863,899,971.26
  5. Step 5: Solve for x
    x = 3,863,899,971.26/71,176.86
  6. Step 6: Final answer
    x = 54,285.90

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1.5x scale

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.