Home / 66,961,690.05-100,442,889.78-20,899,701.58

Finding the Fourth Proportional to 66,961,690.05, 100,442,889.78 and 20,899,701.58

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Solution

The fourth proportional to 66,961,690.05, 100,442,889.78 and 20,899,701.58 is: 31,349,663.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,961,690.05 : 100,442,889.78 = 20,899,701.58 : x
  2. Step 2: Convert to fraction form
    66,961,690.05/100,442,889.78 = 20,899,701.58/x
  3. Step 3: Cross multiply
    66,961,690.05x = 100,442,889.78 × 20,899,701.58
  4. Step 4: Simplify right side
    66,961,690.05x = 2,099,226,421,795,293.75
  5. Step 5: Solve for x
    x = 2,099,226,421,795,293.75/66,961,690.05
  6. Step 6: Final answer
    x = 31,349,663.07

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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.