Home / 80,631,530.10-120,870,672.39-51,403,324.86

Finding the Fourth Proportional to 80,631,530.10, 120,870,672.39 and 51,403,324.86

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Solution

The fourth proportional to 80,631,530.10, 120,870,672.39 and 51,403,324.86 is: 77,056,139.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,631,530.10 : 120,870,672.39 = 51,403,324.86 : x
  2. Step 2: Convert to fraction form
    80,631,530.10/120,870,672.39 = 51,403,324.86/x
  3. Step 3: Cross multiply
    80,631,530.10x = 120,870,672.39 × 51,403,324.86
  4. Step 4: Simplify right side
    80,631,530.10x = 6,213,154,438,909,803
  5. Step 5: Solve for x
    x = 6,213,154,438,909,803/80,631,530.10
  6. Step 6: Final answer
    x = 77,056,139.59

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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.