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Finding the Fourth Proportional to 56,571.95, 84,868.81 and 19,138.04

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Solution

The fourth proportional to 56,571.95, 84,868.81 and 19,138.04 is: 28,710.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,571.95 : 84,868.81 = 19,138.04 : x
  2. Step 2: Convert to fraction form
    56,571.95/84,868.81 = 19,138.04/x
  3. Step 3: Cross multiply
    56,571.95x = 84,868.81 × 19,138.04
  4. Step 4: Simplify right side
    56,571.95x = 1,624,222,680.53
  5. Step 5: Solve for x
    x = 1,624,222,680.53/56,571.95
  6. Step 6: Final answer
    x = 28,710.74

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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.