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Finding the Fourth Proportional to 57,053.70, 78,730.11 and 33,178.68

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Solution

The fourth proportional to 57,053.70, 78,730.11 and 33,178.68 is: 45,784.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,053.70 : 78,730.11 = 33,178.68 : x
  2. Step 2: Convert to fraction form
    57,053.70/78,730.11 = 33,178.68/x
  3. Step 3: Cross multiply
    57,053.70x = 78,730.11 × 33,178.68
  4. Step 4: Simplify right side
    57,053.70x = 2,612,161,126.05
  5. Step 5: Solve for x
    x = 2,612,161,126.05/57,053.70
  6. Step 6: Final answer
    x = 45,784.25

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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.