Home / 85,238.60-117,603.16-49,421.42

Finding the Fourth Proportional to 85,238.60, 117,603.16 and 49,421.42

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Solution

The fourth proportional to 85,238.60, 117,603.16 and 49,421.42 is: 68,186.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,238.60 : 117,603.16 = 49,421.42 : x
  2. Step 2: Convert to fraction form
    85,238.60/117,603.16 = 49,421.42/x
  3. Step 3: Cross multiply
    85,238.60x = 117,603.16 × 49,421.42
  4. Step 4: Simplify right side
    85,238.60x = 5,812,114,452.12
  5. Step 5: Solve for x
    x = 5,812,114,452.12/85,238.60
  6. Step 6: Final answer
    x = 68,186.42

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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.