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Finding the Fourth Proportional to 45,697.48, 68,533.26 and 17,989

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Solution

The fourth proportional to 45,697.48, 68,533.26 and 17,989 is: 26,978.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,697.48 : 68,533.26 = 17,989 : x
  2. Step 2: Convert to fraction form
    45,697.48/68,533.26 = 17,989/x
  3. Step 3: Cross multiply
    45,697.48x = 68,533.26 × 17,989
  4. Step 4: Simplify right side
    45,697.48x = 1,232,844,814.14
  5. Step 5: Solve for x
    x = 1,232,844,814.14/45,697.48
  6. Step 6: Final answer
    x = 26,978.40

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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.