Home / 68,985.12-103,421.87-21,575.82

Finding the Fourth Proportional to 68,985.12, 103,421.87 and 21,575.82

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Solution

The fourth proportional to 68,985.12, 103,421.87 and 21,575.82 is: 32,346.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,985.12 : 103,421.87 = 21,575.82 : x
  2. Step 2: Convert to fraction form
    68,985.12/103,421.87 = 21,575.82/x
  3. Step 3: Cross multiply
    68,985.12x = 103,421.87 × 21,575.82
  4. Step 4: Simplify right side
    68,985.12x = 2,231,411,651.18
  5. Step 5: Solve for x
    x = 2,231,411,651.18/68,985.12
  6. Step 6: Final answer
    x = 32,346.27

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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.