Home / 76,982.94-106,230.42-42,988.79

Finding the Fourth Proportional to 76,982.94, 106,230.42 and 42,988.79

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Solution

The fourth proportional to 76,982.94, 106,230.42 and 42,988.79 is: 59,321.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,982.94 : 106,230.42 = 42,988.79 : x
  2. Step 2: Convert to fraction form
    76,982.94/106,230.42 = 42,988.79/x
  3. Step 3: Cross multiply
    76,982.94x = 106,230.42 × 42,988.79
  4. Step 4: Simplify right side
    76,982.94x = 4,566,717,482.57
  5. Step 5: Solve for x
    x = 4,566,717,482.57/76,982.94
  6. Step 6: Final answer
    x = 59,321.16

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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.