Home / 79,966.44-119,952.90-20,807.28

Finding the Fourth Proportional to 79,966.44, 119,952.90 and 20,807.28

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Solution

The fourth proportional to 79,966.44, 119,952.90 and 20,807.28 is: 31,211.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,966.44 : 119,952.90 = 20,807.28 : x
  2. Step 2: Convert to fraction form
    79,966.44/119,952.90 = 20,807.28/x
  3. Step 3: Cross multiply
    79,966.44x = 119,952.90 × 20,807.28
  4. Step 4: Simplify right side
    79,966.44x = 2,495,893,577.11
  5. Step 5: Solve for x
    x = 2,495,893,577.11/79,966.44
  6. Step 6: Final answer
    x = 31,211.76

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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.