Home / 66,421,915.20-99,646,869.60-28,063,684.80

Finding the Fourth Proportional to 66,421,915.20, 99,646,869.60 and 28,063,684.80

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Solution

The fourth proportional to 66,421,915.20, 99,646,869.60 and 28,063,684.80 is: 42,101,440.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,421,915.20 : 99,646,869.60 = 28,063,684.80 : x
  2. Step 2: Convert to fraction form
    66,421,915.20/99,646,869.60 = 28,063,684.80/x
  3. Step 3: Cross multiply
    66,421,915.20x = 99,646,869.60 × 28,063,684.80
  4. Step 4: Simplify right side
    66,421,915.20x = 2,796,458,339,761,102
  5. Step 5: Solve for x
    x = 2,796,458,339,761,102/66,421,915.20
  6. Step 6: Final answer
    x = 42,101,440.94

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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.