Home / 77,590.31-116,376.70-21,438.42

Finding the Fourth Proportional to 77,590.31, 116,376.70 and 21,438.42

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Solution

The fourth proportional to 77,590.31, 116,376.70 and 21,438.42 is: 32,155.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,590.31 : 116,376.70 = 21,438.42 : x
  2. Step 2: Convert to fraction form
    77,590.31/116,376.70 = 21,438.42/x
  3. Step 3: Cross multiply
    77,590.31x = 116,376.70 × 21,438.42
  4. Step 4: Simplify right side
    77,590.31x = 2,494,932,777.62
  5. Step 5: Solve for x
    x = 2,494,932,777.62/77,590.31
  6. Step 6: Final answer
    x = 32,155.21

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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.