Home / 30,269,021.70-45,403,532.55-21,021,948.30

Finding the Fourth Proportional to 30,269,021.70, 45,403,532.55 and 21,021,948.30

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Solution

The fourth proportional to 30,269,021.70, 45,403,532.55 and 21,021,948.30 is: 31,532,922.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,269,021.70 : 45,403,532.55 = 21,021,948.30 : x
  2. Step 2: Convert to fraction form
    30,269,021.70/45,403,532.55 = 21,021,948.30/x
  3. Step 3: Cross multiply
    30,269,021.70x = 45,403,532.55 × 21,021,948.30
  4. Step 4: Simplify right side
    30,269,021.70x = 954,470,713,903,467.12
  5. Step 5: Solve for x
    x = 954,470,713,903,467.12/30,269,021.70
  6. Step 6: Final answer
    x = 31,532,922.45

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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.