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Finding the Fourth Proportional to 57,287.40, 79,054.27 and 31,794.84

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Solution

The fourth proportional to 57,287.40, 79,054.27 and 31,794.84 is: 43,875.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,287.40 : 79,054.27 = 31,794.84 : x
  2. Step 2: Convert to fraction form
    57,287.40/79,054.27 = 31,794.84/x
  3. Step 3: Cross multiply
    57,287.40x = 79,054.27 × 31,794.84
  4. Step 4: Simplify right side
    57,287.40x = 2,513,517,865.97
  5. Step 5: Solve for x
    x = 2,513,517,865.97/57,287.40
  6. Step 6: Final answer
    x = 43,875.58

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.