Home / 45,989.40-68,984.10-31,992.60

Finding the Fourth Proportional to 45,989.40, 68,984.10 and 31,992.60

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Solution

The fourth proportional to 45,989.40, 68,984.10 and 31,992.60 is: 47,988.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,989.40 : 68,984.10 = 31,992.60 : x
  2. Step 2: Convert to fraction form
    45,989.40/68,984.10 = 31,992.60/x
  3. Step 3: Cross multiply
    45,989.40x = 68,984.10 × 31,992.60
  4. Step 4: Simplify right side
    45,989.40x = 2,206,980,717.66
  5. Step 5: Solve for x
    x = 2,206,980,717.66/45,989.40
  6. Step 6: Final answer
    x = 47,988.90

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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.