Home / 66,438,678.20-99,672,014.10-28,080,447.80

Finding the Fourth Proportional to 66,438,678.20, 99,672,014.10 and 28,080,447.80

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Solution

The fourth proportional to 66,438,678.20, 99,672,014.10 and 28,080,447.80 is: 42,126,587.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,438,678.20 : 99,672,014.10 = 28,080,447.80 : x
  2. Step 2: Convert to fraction form
    66,438,678.20/99,672,014.10 = 28,080,447.80/x
  3. Step 3: Cross multiply
    66,438,678.20x = 99,672,014.10 × 28,080,447.80
  4. Step 4: Simplify right side
    66,438,678.20x = 2,798,834,789,055,914
  5. Step 5: Solve for x
    x = 2,798,834,789,055,914/66,438,678.20
  6. Step 6: Final answer
    x = 42,126,587.48

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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.