Home / 76,931.64-115,396.92-41,409.72

Finding the Fourth Proportional to 76,931.64, 115,396.92 and 41,409.72

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Solution

The fourth proportional to 76,931.64, 115,396.92 and 41,409.72 is: 62,114.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,931.64 : 115,396.92 = 41,409.72 : x
  2. Step 2: Convert to fraction form
    76,931.64/115,396.92 = 41,409.72/x
  3. Step 3: Cross multiply
    76,931.64x = 115,396.92 × 41,409.72
  4. Step 4: Simplify right side
    76,931.64x = 4,778,554,146.06
  5. Step 5: Solve for x
    x = 4,778,554,146.06/76,931.64
  6. Step 6: Final answer
    x = 62,114.29

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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.