Home / 57,175.25-78,900.67-31,681.39

Finding the Fourth Proportional to 57,175.25, 78,900.67 and 31,681.39

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Solution

The fourth proportional to 57,175.25, 78,900.67 and 31,681.39 is: 43,719.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,175.25 : 78,900.67 = 31,681.39 : x
  2. Step 2: Convert to fraction form
    57,175.25/78,900.67 = 31,681.39/x
  3. Step 3: Cross multiply
    57,175.25x = 78,900.67 × 31,681.39
  4. Step 4: Simplify right side
    57,175.25x = 2,499,682,916.95
  5. Step 5: Solve for x
    x = 2,499,682,916.95/57,175.25
  6. Step 6: Final answer
    x = 43,719.67

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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.