Home / 79,966.48-119,949.87-20,802.05

Finding the Fourth Proportional to 79,966.48, 119,949.87 and 20,802.05

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Solution

The fourth proportional to 79,966.48, 119,949.87 and 20,802.05 is: 31,203.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,966.48 : 119,949.87 = 20,802.05 : x
  2. Step 2: Convert to fraction form
    79,966.48/119,949.87 = 20,802.05/x
  3. Step 3: Cross multiply
    79,966.48x = 119,949.87 × 20,802.05
  4. Step 4: Simplify right side
    79,966.48x = 2,495,203,796.02
  5. Step 5: Solve for x
    x = 2,495,203,796.02/79,966.48
  6. Step 6: Final answer
    x = 31,203.12

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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.