Home / 66,528,098.05-99,792,147.08-21,089,819.65

Finding the Fourth Proportional to 66,528,098.05, 99,792,147.08 and 21,089,819.65

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Solution

The fourth proportional to 66,528,098.05, 99,792,147.08 and 21,089,819.65 is: 31,634,729.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,528,098.05 : 99,792,147.08 = 21,089,819.65 : x
  2. Step 2: Convert to fraction form
    66,528,098.05/99,792,147.08 = 21,089,819.65/x
  3. Step 3: Cross multiply
    66,528,098.05x = 99,792,147.08 × 21,089,819.65
  4. Step 4: Simplify right side
    66,528,098.05x = 2,104,598,384,403,474
  5. Step 5: Solve for x
    x = 2,104,598,384,403,474/66,528,098.05
  6. Step 6: Final answer
    x = 31,634,729.48

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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.