Home / 30,269,021.20-45,403,531.80-21,021,947.80

Finding the Fourth Proportional to 30,269,021.20, 45,403,531.80 and 21,021,947.80

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Solution

The fourth proportional to 30,269,021.20, 45,403,531.80 and 21,021,947.80 is: 31,532,921.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,269,021.20 : 45,403,531.80 = 21,021,947.80 : x
  2. Step 2: Convert to fraction form
    30,269,021.20/45,403,531.80 = 21,021,947.80/x
  3. Step 3: Cross multiply
    30,269,021.20x = 45,403,531.80 × 21,021,947.80
  4. Step 4: Simplify right side
    30,269,021.20x = 954,470,675,435,240
  5. Step 5: Solve for x
    x = 954,470,675,435,240/30,269,021.20
  6. Step 6: Final answer
    x = 31,532,921.70

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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.