Home / 76,980.17-106,231.64-42,989.24

Finding the Fourth Proportional to 76,980.17, 106,231.64 and 42,989.24

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Solution

The fourth proportional to 76,980.17, 106,231.64 and 42,989.24 is: 59,324.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,980.17 : 106,231.64 = 42,989.24 : x
  2. Step 2: Convert to fraction form
    76,980.17/106,231.64 = 42,989.24/x
  3. Step 3: Cross multiply
    76,980.17x = 106,231.64 × 42,989.24
  4. Step 4: Simplify right side
    76,980.17x = 4,566,816,721.45
  5. Step 5: Solve for x
    x = 4,566,816,721.45/76,980.17
  6. Step 6: Final answer
    x = 59,324.59

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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.