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Finding the Fourth Proportional to 57,139.44, 78,862.04 and 33,280.28

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Solution

The fourth proportional to 57,139.44, 78,862.04 and 33,280.28 is: 45,932.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,139.44 : 78,862.04 = 33,280.28 : x
  2. Step 2: Convert to fraction form
    57,139.44/78,862.04 = 33,280.28/x
  3. Step 3: Cross multiply
    57,139.44x = 78,862.04 × 33,280.28
  4. Step 4: Simplify right side
    57,139.44x = 2,624,550,772.57
  5. Step 5: Solve for x
    x = 2,624,550,772.57/57,139.44
  6. Step 6: Final answer
    x = 45,932.39

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.