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Finding the Fourth Proportional to 57,997,731.60, 86,993,832.60 and 19,655,485.20

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Solution

The fourth proportional to 57,997,731.60, 86,993,832.60 and 19,655,485.20 is: 29,482,290.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,997,731.60 : 86,993,832.60 = 19,655,485.20 : x
  2. Step 2: Convert to fraction form
    57,997,731.60/86,993,832.60 = 19,655,485.20/x
  3. Step 3: Cross multiply
    57,997,731.60x = 86,993,832.60 × 19,655,485.20
  4. Step 4: Simplify right side
    57,997,731.60x = 1,709,905,989,160,577.25
  5. Step 5: Solve for x
    x = 1,709,905,989,160,577.25/57,997,731.60
  6. Step 6: Final answer
    x = 29,482,290.81

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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.