Home / 72,490,122.40-108,735,183.60-40,241,495.20

Finding the Fourth Proportional to 72,490,122.40, 108,735,183.60 and 40,241,495.20

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Solution

The fourth proportional to 72,490,122.40, 108,735,183.60 and 40,241,495.20 is: 60,362,242.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,490,122.40 : 108,735,183.60 = 40,241,495.20 : x
  2. Step 2: Convert to fraction form
    72,490,122.40/108,735,183.60 = 40,241,495.20/x
  3. Step 3: Cross multiply
    72,490,122.40x = 108,735,183.60 × 40,241,495.20
  4. Step 4: Simplify right side
    72,490,122.40x = 4,375,666,368,910,519
  5. Step 5: Solve for x
    x = 4,375,666,368,910,519/72,490,122.40
  6. Step 6: Final answer
    x = 60,362,242.80

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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.