Home / 84,002.40-115,927.20-57,175.20

Finding the Fourth Proportional to 84,002.40, 115,927.20 and 57,175.20

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Solution

The fourth proportional to 84,002.40, 115,927.20 and 57,175.20 is: 78,904.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,002.40 : 115,927.20 = 57,175.20 : x
  2. Step 2: Convert to fraction form
    84,002.40/115,927.20 = 57,175.20/x
  3. Step 3: Cross multiply
    84,002.40x = 115,927.20 × 57,175.20
  4. Step 4: Simplify right side
    84,002.40x = 6,628,160,845.44
  5. Step 5: Solve for x
    x = 6,628,160,845.44/84,002.40
  6. Step 6: Final answer
    x = 78,904.42

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1.5x scale

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.