Home / 85,367,940.72-117,690,680.88-53,990,350.80

Finding the Fourth Proportional to 85,367,940.72, 117,690,680.88 and 53,990,350.80

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Solution

The fourth proportional to 85,367,940.72, 117,690,680.88 and 53,990,350.80 is: 74,432,639.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,367,940.72 : 117,690,680.88 = 53,990,350.80 : x
  2. Step 2: Convert to fraction form
    85,367,940.72/117,690,680.88 = 53,990,350.80/x
  3. Step 3: Cross multiply
    85,367,940.72x = 117,690,680.88 × 53,990,350.80
  4. Step 4: Simplify right side
    85,367,940.72x = 6,354,161,146,602,052
  5. Step 5: Solve for x
    x = 6,354,161,146,602,052/85,367,940.72
  6. Step 6: Final answer
    x = 74,432,639.38

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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.