Home / 57,497.21-79,382.61-39,378.32

Finding the Fourth Proportional to 57,497.21, 79,382.61 and 39,378.32

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Solution

The fourth proportional to 57,497.21, 79,382.61 and 39,378.32 is: 54,367.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,497.21 : 79,382.61 = 39,378.32 : x
  2. Step 2: Convert to fraction form
    57,497.21/79,382.61 = 39,378.32/x
  3. Step 3: Cross multiply
    57,497.21x = 79,382.61 × 39,378.32
  4. Step 4: Simplify right side
    57,497.21x = 3,125,953,622.12
  5. Step 5: Solve for x
    x = 3,125,953,622.12/57,497.21
  6. Step 6: Final answer
    x = 54,367.05

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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.