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Finding the Fourth Proportional to 40,570.92, 60,858.54 and 12,871.08

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Solution

The fourth proportional to 40,570.92, 60,858.54 and 12,871.08 is: 19,307.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,570.92 : 60,858.54 = 12,871.08 : x
  2. Step 2: Convert to fraction form
    40,570.92/60,858.54 = 12,871.08/x
  3. Step 3: Cross multiply
    40,570.92x = 60,858.54 × 12,871.08
  4. Step 4: Simplify right side
    40,570.92x = 783,315,137.02
  5. Step 5: Solve for x
    x = 783,315,137.02/40,570.92
  6. Step 6: Final answer
    x = 19,307.31

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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.