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Finding the Fourth Proportional to 40,647.94, 60,977.78 and 12,570.31

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Solution

The fourth proportional to 40,647.94, 60,977.78 and 12,570.31 is: 18,857.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,647.94 : 60,977.78 = 12,570.31 : x
  2. Step 2: Convert to fraction form
    40,647.94/60,977.78 = 12,570.31/x
  3. Step 3: Cross multiply
    40,647.94x = 60,977.78 × 12,570.31
  4. Step 4: Simplify right side
    40,647.94x = 766,509,229.97
  5. Step 5: Solve for x
    x = 766,509,229.97/40,647.94
  6. Step 6: Final answer
    x = 18,857.27

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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.