Home / 66,431,766.96-91,673,759.88-38,948,000.40

Finding the Fourth Proportional to 66,431,766.96, 91,673,759.88 and 38,948,000.40

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Solution

The fourth proportional to 66,431,766.96, 91,673,759.88 and 38,948,000.40 is: 53,747,021.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,431,766.96 : 91,673,759.88 = 38,948,000.40 : x
  2. Step 2: Convert to fraction form
    66,431,766.96/91,673,759.88 = 38,948,000.40/x
  3. Step 3: Cross multiply
    66,431,766.96x = 91,673,759.88 × 38,948,000.40
  4. Step 4: Simplify right side
    66,431,766.96x = 3,570,509,636,475,743.50
  5. Step 5: Solve for x
    x = 3,570,509,636,475,743.50/66,431,766.96
  6. Step 6: Final answer
    x = 53,747,021.94

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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.