Home / 57,207.29-78,858.59-40,163.76

Finding the Fourth Proportional to 57,207.29, 78,858.59 and 40,163.76

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Solution

The fourth proportional to 57,207.29, 78,858.59 and 40,163.76 is: 55,364.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,207.29 : 78,858.59 = 40,163.76 : x
  2. Step 2: Convert to fraction form
    57,207.29/78,858.59 = 40,163.76/x
  3. Step 3: Cross multiply
    57,207.29x = 78,858.59 × 40,163.76
  4. Step 4: Simplify right side
    57,207.29x = 3,167,257,281.88
  5. Step 5: Solve for x
    x = 3,167,257,281.88/57,207.29
  6. Step 6: Final answer
    x = 55,364.58

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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.