Home / 66,438,669.20-99,672,000.60-28,080,438.80

Finding the Fourth Proportional to 66,438,669.20, 99,672,000.60 and 28,080,438.80

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Solution

The fourth proportional to 66,438,669.20, 99,672,000.60 and 28,080,438.80 is: 42,126,573.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,438,669.20 : 99,672,000.60 = 28,080,438.80 : x
  2. Step 2: Convert to fraction form
    66,438,669.20/99,672,000.60 = 28,080,438.80/x
  3. Step 3: Cross multiply
    66,438,669.20x = 99,672,000.60 × 28,080,438.80
  4. Step 4: Simplify right side
    66,438,669.20x = 2,798,833,512,921,863
  5. Step 5: Solve for x
    x = 2,798,833,512,921,863/66,438,669.20
  6. Step 6: Final answer
    x = 42,126,573.98

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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.