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Finding the Fourth Proportional to 57,966.80, 86,901.60 and 30,264.80

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Solution

The fourth proportional to 57,966.80, 86,901.60 and 30,264.80 is: 45,371.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,966.80 : 86,901.60 = 30,264.80 : x
  2. Step 2: Convert to fraction form
    57,966.80/86,901.60 = 30,264.80/x
  3. Step 3: Cross multiply
    57,966.80x = 86,901.60 × 30,264.80
  4. Step 4: Simplify right side
    57,966.80x = 2,630,059,543.68
  5. Step 5: Solve for x
    x = 2,630,059,543.68/57,966.80
  6. Step 6: Final answer
    x = 45,371.83

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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.