Home / 66,981,029.71-100,407,771.24-21,510,937.75

Finding the Fourth Proportional to 66,981,029.71, 100,407,771.24 and 21,510,937.75

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Solution

The fourth proportional to 66,981,029.71, 100,407,771.24 and 21,510,937.75 is: 32,245,925.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,981,029.71 : 100,407,771.24 = 21,510,937.75 : x
  2. Step 2: Convert to fraction form
    66,981,029.71/100,407,771.24 = 21,510,937.75/x
  3. Step 3: Cross multiply
    66,981,029.71x = 100,407,771.24 × 21,510,937.75
  4. Step 4: Simplify right side
    66,981,029.71x = 2,159,865,316,759,880.25
  5. Step 5: Solve for x
    x = 2,159,865,316,759,880.25/66,981,029.71
  6. Step 6: Final answer
    x = 32,245,925.84

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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.