Home / 43,354.90-64,987.62-21,140.83

Finding the Fourth Proportional to 43,354.90, 64,987.62 and 21,140.83

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Solution

The fourth proportional to 43,354.90, 64,987.62 and 21,140.83 is: 31,689.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,354.90 : 64,987.62 = 21,140.83 : x
  2. Step 2: Convert to fraction form
    43,354.90/64,987.62 = 21,140.83/x
  3. Step 3: Cross multiply
    43,354.90x = 64,987.62 × 21,140.83
  4. Step 4: Simplify right side
    43,354.90x = 1,373,892,226.52
  5. Step 5: Solve for x
    x = 1,373,892,226.52/43,354.90
  6. Step 6: Final answer
    x = 31,689.43

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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.