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Finding the Fourth Proportional to 57,750.40, 86,625.60 and 47,252.80

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Solution

The fourth proportional to 57,750.40, 86,625.60 and 47,252.80 is: 70,879.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,750.40 : 86,625.60 = 47,252.80 : x
  2. Step 2: Convert to fraction form
    57,750.40/86,625.60 = 47,252.80/x
  3. Step 3: Cross multiply
    57,750.40x = 86,625.60 × 47,252.80
  4. Step 4: Simplify right side
    57,750.40x = 4,093,302,151.68
  5. Step 5: Solve for x
    x = 4,093,302,151.68/57,750.40
  6. Step 6: Final answer
    x = 70,879.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.