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Finding the Fourth Proportional to 57,313.80, 85,970.70 and 53,377.20

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Solution

The fourth proportional to 57,313.80, 85,970.70 and 53,377.20 is: 80,065.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,313.80 : 85,970.70 = 53,377.20 : x
  2. Step 2: Convert to fraction form
    57,313.80/85,970.70 = 53,377.20/x
  3. Step 3: Cross multiply
    57,313.80x = 85,970.70 × 53,377.20
  4. Step 4: Simplify right side
    57,313.80x = 4,588,875,248.04
  5. Step 5: Solve for x
    x = 4,588,875,248.04/57,313.80
  6. Step 6: Final answer
    x = 80,065.80

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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.