Home / 76,632.62-115,014.54-43,385.36

Finding the Fourth Proportional to 76,632.62, 115,014.54 and 43,385.36

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Solution

The fourth proportional to 76,632.62, 115,014.54 and 43,385.36 is: 65,115.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,632.62 : 115,014.54 = 43,385.36 : x
  2. Step 2: Convert to fraction form
    76,632.62/115,014.54 = 43,385.36/x
  3. Step 3: Cross multiply
    76,632.62x = 115,014.54 × 43,385.36
  4. Step 4: Simplify right side
    76,632.62x = 4,989,947,223.13
  5. Step 5: Solve for x
    x = 4,989,947,223.13/76,632.62
  6. Step 6: Final answer
    x = 65,115.18

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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.