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Finding the Fourth Proportional to 79,871.40, 119,762.12 and 26,534.82

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Solution

The fourth proportional to 79,871.40, 119,762.12 and 26,534.82 is: 39,787.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,871.40 : 119,762.12 = 26,534.82 : x
  2. Step 2: Convert to fraction form
    79,871.40/119,762.12 = 26,534.82/x
  3. Step 3: Cross multiply
    79,871.40x = 119,762.12 × 26,534.82
  4. Step 4: Simplify right side
    79,871.40x = 3,177,866,297.02
  5. Step 5: Solve for x
    x = 3,177,866,297.02/79,871.40
  6. Step 6: Final answer
    x = 39,787.29

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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.