Home / 77,985.63-116,977.41-18,821.03

Finding the Fourth Proportional to 77,985.63, 116,977.41 and 18,821.03

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Solution

The fourth proportional to 77,985.63, 116,977.41 and 18,821.03 is: 28,231.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,985.63 : 116,977.41 = 18,821.03 : x
  2. Step 2: Convert to fraction form
    77,985.63/116,977.41 = 18,821.03/x
  3. Step 3: Cross multiply
    77,985.63x = 116,977.41 × 18,821.03
  4. Step 4: Simplify right side
    77,985.63x = 2,201,634,758.05
  5. Step 5: Solve for x
    x = 2,201,634,758.05/77,985.63
  6. Step 6: Final answer
    x = 28,231.29

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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.