Home / 76,969.13-106,219.20-42,976.47

Finding the Fourth Proportional to 76,969.13, 106,219.20 and 42,976.47

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Solution

The fourth proportional to 76,969.13, 106,219.20 and 42,976.47 is: 59,308.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,969.13 : 106,219.20 = 42,976.47 : x
  2. Step 2: Convert to fraction form
    76,969.13/106,219.20 = 42,976.47/x
  3. Step 3: Cross multiply
    76,969.13x = 106,219.20 × 42,976.47
  4. Step 4: Simplify right side
    76,969.13x = 4,564,926,262.22
  5. Step 5: Solve for x
    x = 4,564,926,262.22/76,969.13
  6. Step 6: Final answer
    x = 59,308.53

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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.