Home / 67,269,915.81-100,895,294.66-21,205,805.49

Finding the Fourth Proportional to 67,269,915.81, 100,895,294.66 and 21,205,805.49

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Solution

The fourth proportional to 67,269,915.81, 100,895,294.66 and 21,205,805.49 is: 31,805,688.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,269,915.81 : 100,895,294.66 = 21,205,805.49 : x
  2. Step 2: Convert to fraction form
    67,269,915.81/100,895,294.66 = 21,205,805.49/x
  3. Step 3: Cross multiply
    67,269,915.81x = 100,895,294.66 × 21,205,805.49
  4. Step 4: Simplify right side
    67,269,915.81x = 2,139,565,993,310,166.50
  5. Step 5: Solve for x
    x = 2,139,565,993,310,166.50/67,269,915.81
  6. Step 6: Final answer
    x = 31,805,688.58

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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.