Home / 81,483,918.72-122,225,911.02-20,074,272

Finding the Fourth Proportional to 81,483,918.72, 122,225,911.02 and 20,074,272

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Solution

The fourth proportional to 81,483,918.72, 122,225,911.02 and 20,074,272 is: 30,111,416.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,483,918.72 : 122,225,911.02 = 20,074,272 : x
  2. Step 2: Convert to fraction form
    81,483,918.72/122,225,911.02 = 20,074,272/x
  3. Step 3: Cross multiply
    81,483,918.72x = 122,225,911.02 × 20,074,272
  4. Step 4: Simplify right side
    81,483,918.72x = 2,453,596,183,263,277.50
  5. Step 5: Solve for x
    x = 2,453,596,183,263,277.50/81,483,918.72
  6. Step 6: Final answer
    x = 30,111,416.12

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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.