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Finding the Fourth Proportional to 57,276.80, 85,842.30 and 51,007.40

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Solution

The fourth proportional to 57,276.80, 85,842.30 and 51,007.40 is: 76,446.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,276.80 : 85,842.30 = 51,007.40 : x
  2. Step 2: Convert to fraction form
    57,276.80/85,842.30 = 51,007.40/x
  3. Step 3: Cross multiply
    57,276.80x = 85,842.30 × 51,007.40
  4. Step 4: Simplify right side
    57,276.80x = 4,378,592,533.02
  5. Step 5: Solve for x
    x = 4,378,592,533.02/57,276.80
  6. Step 6: Final answer
    x = 76,446.18

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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.