Home / 69,343,618.96-104,012,905.80-20,820,211.64

Finding the Fourth Proportional to 69,343,618.96, 104,012,905.80 and 20,820,211.64

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Solution

The fourth proportional to 69,343,618.96, 104,012,905.80 and 20,820,211.64 is: 31,229,560.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,343,618.96 : 104,012,905.80 = 20,820,211.64 : x
  2. Step 2: Convert to fraction form
    69,343,618.96/104,012,905.80 = 20,820,211.64/x
  3. Step 3: Cross multiply
    69,343,618.96x = 104,012,905.80 × 20,820,211.64
  4. Step 4: Simplify right side
    69,343,618.96x = 2,165,570,712,047,383.50
  5. Step 5: Solve for x
    x = 2,165,570,712,047,383.50/69,343,618.96
  6. Step 6: Final answer
    x = 31,229,560.04

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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.