Home / 81,532,113.39-122,260,378.32-30,400,403.31

Finding the Fourth Proportional to 81,532,113.39, 122,260,378.32 and 30,400,403.31

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Solution

The fourth proportional to 81,532,113.39, 122,260,378.32 and 30,400,403.31 is: 45,586,513.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,532,113.39 : 122,260,378.32 = 30,400,403.31 : x
  2. Step 2: Convert to fraction form
    81,532,113.39/122,260,378.32 = 30,400,403.31/x
  3. Step 3: Cross multiply
    81,532,113.39x = 122,260,378.32 × 30,400,403.31
  4. Step 4: Simplify right side
    81,532,113.39x = 3,716,764,809,761,180
  5. Step 5: Solve for x
    x = 3,716,764,809,761,180/81,532,113.39
  6. Step 6: Final answer
    x = 45,586,513.77

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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.