Home / 76,976.42-106,226.46-42,985.49

Finding the Fourth Proportional to 76,976.42, 106,226.46 and 42,985.49

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Solution

The fourth proportional to 76,976.42, 106,226.46 and 42,985.49 is: 59,319.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,976.42 : 106,226.46 = 42,985.49 : x
  2. Step 2: Convert to fraction form
    76,976.42/106,226.46 = 42,985.49/x
  3. Step 3: Cross multiply
    76,976.42x = 106,226.46 × 42,985.49
  4. Step 4: Simplify right side
    76,976.42x = 4,566,195,902.93
  5. Step 5: Solve for x
    x = 4,566,195,902.93/76,976.42
  6. Step 6: Final answer
    x = 59,319.41

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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.