Home / 30,611,286.85-42,241,981.55-19,008,601.21

Finding the Fourth Proportional to 30,611,286.85, 42,241,981.55 and 19,008,601.21

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Solution

The fourth proportional to 30,611,286.85, 42,241,981.55 and 19,008,601.21 is: 26,230,879.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,611,286.85 : 42,241,981.55 = 19,008,601.21 : x
  2. Step 2: Convert to fraction form
    30,611,286.85/42,241,981.55 = 19,008,601.21/x
  3. Step 3: Cross multiply
    30,611,286.85x = 42,241,981.55 × 19,008,601.21
  4. Step 4: Simplify right side
    30,611,286.85x = 802,960,981,509,084.75
  5. Step 5: Solve for x
    x = 802,960,981,509,084.75/30,611,286.85
  6. Step 6: Final answer
    x = 26,230,879.66

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.