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Finding the Fourth Proportional to 56,933.80, 85,400.70 and 53,708.20

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Solution

The fourth proportional to 56,933.80, 85,400.70 and 53,708.20 is: 80,562.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,933.80 : 85,400.70 = 53,708.20 : x
  2. Step 2: Convert to fraction form
    56,933.80/85,400.70 = 53,708.20/x
  3. Step 3: Cross multiply
    56,933.80x = 85,400.70 × 53,708.20
  4. Step 4: Simplify right side
    56,933.80x = 4,586,717,875.74
  5. Step 5: Solve for x
    x = 4,586,717,875.74/56,933.80
  6. Step 6: Final answer
    x = 80,562.30

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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.