Home / 76,785.16-115,130.22-29,983

Finding the Fourth Proportional to 76,785.16, 115,130.22 and 29,983

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Solution

The fourth proportional to 76,785.16, 115,130.22 and 29,983 is: 44,955.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,785.16 : 115,130.22 = 29,983 : x
  2. Step 2: Convert to fraction form
    76,785.16/115,130.22 = 29,983/x
  3. Step 3: Cross multiply
    76,785.16x = 115,130.22 × 29,983
  4. Step 4: Simplify right side
    76,785.16x = 3,451,949,386.26
  5. Step 5: Solve for x
    x = 3,451,949,386.26/76,785.16
  6. Step 6: Final answer
    x = 44,955.94

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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.