Home / 72,606,665.70-108,909,998.55-72,181,512.90

Finding the Fourth Proportional to 72,606,665.70, 108,909,998.55 and 72,181,512.90

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Solution

The fourth proportional to 72,606,665.70, 108,909,998.55 and 72,181,512.90 is: 108,272,269.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,606,665.70 : 108,909,998.55 = 72,181,512.90 : x
  2. Step 2: Convert to fraction form
    72,606,665.70/108,909,998.55 = 72,181,512.90/x
  3. Step 3: Cross multiply
    72,606,665.70x = 108,909,998.55 × 72,181,512.90
  4. Step 4: Simplify right side
    72,606,665.70x = 7,861,288,465,275,807
  5. Step 5: Solve for x
    x = 7,861,288,465,275,807/72,606,665.70
  6. Step 6: Final answer
    x = 108,272,269.35

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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.