Home / 78,266.21-117,416.30-25,673.72

Finding the Fourth Proportional to 78,266.21, 117,416.30 and 25,673.72

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Solution

The fourth proportional to 78,266.21, 117,416.30 and 25,673.72 is: 38,516.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,266.21 : 117,416.30 = 25,673.72 : x
  2. Step 2: Convert to fraction form
    78,266.21/117,416.30 = 25,673.72/x
  3. Step 3: Cross multiply
    78,266.21x = 117,416.30 × 25,673.72
  4. Step 4: Simplify right side
    78,266.21x = 3,014,512,494.19
  5. Step 5: Solve for x
    x = 3,014,512,494.19/78,266.21
  6. Step 6: Final answer
    x = 38,516.14

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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.