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Finding the Fourth Proportional to 71,211.94, 98,272.34 and 40,986.25

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Solution

The fourth proportional to 71,211.94, 98,272.34 and 40,986.25 is: 56,560.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,211.94 : 98,272.34 = 40,986.25 : x
  2. Step 2: Convert to fraction form
    71,211.94/98,272.34 = 40,986.25/x
  3. Step 3: Cross multiply
    71,211.94x = 98,272.34 × 40,986.25
  4. Step 4: Simplify right side
    71,211.94x = 4,027,814,490.39
  5. Step 5: Solve for x
    x = 4,027,814,490.39/71,211.94
  6. Step 6: Final answer
    x = 56,560.94

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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.