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Finding the Fourth Proportional to 57,517.80, 86,276.70 and 39,803.10

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Solution

The fourth proportional to 57,517.80, 86,276.70 and 39,803.10 is: 59,704.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,517.80 : 86,276.70 = 39,803.10 : x
  2. Step 2: Convert to fraction form
    57,517.80/86,276.70 = 39,803.10/x
  3. Step 3: Cross multiply
    57,517.80x = 86,276.70 × 39,803.10
  4. Step 4: Simplify right side
    57,517.80x = 3,434,080,117.77
  5. Step 5: Solve for x
    x = 3,434,080,117.77/57,517.80
  6. Step 6: Final answer
    x = 59,704.65

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1.5x scale

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.