Home / 72,511,409.80-108,767,114.70-66,464,792.20

Finding the Fourth Proportional to 72,511,409.80, 108,767,114.70 and 66,464,792.20

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Solution

The fourth proportional to 72,511,409.80, 108,767,114.70 and 66,464,792.20 is: 99,697,188.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,511,409.80 : 108,767,114.70 = 66,464,792.20 : x
  2. Step 2: Convert to fraction form
    72,511,409.80/108,767,114.70 = 66,464,792.20/x
  3. Step 3: Cross multiply
    72,511,409.80x = 108,767,114.70 × 66,464,792.20
  4. Step 4: Simplify right side
    72,511,409.80x = 7,229,183,676,729,066
  5. Step 5: Solve for x
    x = 7,229,183,676,729,066/72,511,409.80
  6. Step 6: Final answer
    x = 99,697,188.30

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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.