Home / 98,851.30-136,409.40-58,568.78

Finding the Fourth Proportional to 98,851.30, 136,409.40 and 58,568.78

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Solution

The fourth proportional to 98,851.30, 136,409.40 and 58,568.78 is: 80,821.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,851.30 : 136,409.40 = 58,568.78 : x
  2. Step 2: Convert to fraction form
    98,851.30/136,409.40 = 58,568.78/x
  3. Step 3: Cross multiply
    98,851.30x = 136,409.40 × 58,568.78
  4. Step 4: Simplify right side
    98,851.30x = 7,989,332,138.53
  5. Step 5: Solve for x
    x = 7,989,332,138.53/98,851.30
  6. Step 6: Final answer
    x = 80,821.72

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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.