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Finding the Fourth Proportional to 57,257,145.30, 79,989,942.30 and 57,257,145.30

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Solution

The fourth proportional to 57,257,145.30, 79,989,942.30 and 57,257,145.30 is: 79,989,942.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,257,145.30 : 79,989,942.30 = 57,257,145.30 : x
  2. Step 2: Convert to fraction form
    57,257,145.30/79,989,942.30 = 57,257,145.30/x
  3. Step 3: Cross multiply
    57,257,145.30x = 79,989,942.30 × 57,257,145.30
  4. Step 4: Simplify right side
    57,257,145.30x = 4,579,995,748,809,716
  5. Step 5: Solve for x
    x = 4,579,995,748,809,716/57,257,145.30
  6. Step 6: Final answer
    x = 79,989,942.30

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.