Home / 79,968.30-119,952.60-20,803.87

Finding the Fourth Proportional to 79,968.30, 119,952.60 and 20,803.87

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Solution

The fourth proportional to 79,968.30, 119,952.60 and 20,803.87 is: 31,205.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,968.30 : 119,952.60 = 20,803.87 : x
  2. Step 2: Convert to fraction form
    79,968.30/119,952.60 = 20,803.87/x
  3. Step 3: Cross multiply
    79,968.30x = 119,952.60 × 20,803.87
  4. Step 4: Simplify right side
    79,968.30x = 2,495,478,192.54
  5. Step 5: Solve for x
    x = 2,495,478,192.54/79,968.30
  6. Step 6: Final answer
    x = 31,205.84

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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.