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Finding the Fourth Proportional to 57,574.68, 86,209.74 and 45,120.12

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Solution

The fourth proportional to 57,574.68, 86,209.74 and 45,120.12 is: 67,560.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,574.68 : 86,209.74 = 45,120.12 : x
  2. Step 2: Convert to fraction form
    57,574.68/86,209.74 = 45,120.12/x
  3. Step 3: Cross multiply
    57,574.68x = 86,209.74 × 45,120.12
  4. Step 4: Simplify right side
    57,574.68x = 3,889,793,813.97
  5. Step 5: Solve for x
    x = 3,889,793,813.97/57,574.68
  6. Step 6: Final answer
    x = 67,560.84

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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.