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Finding the Fourth Proportional to 43,373.52, 65,037.24 and 19,980

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Solution

The fourth proportional to 43,373.52, 65,037.24 and 19,980 is: 29,959.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,373.52 : 65,037.24 = 19,980 : x
  2. Step 2: Convert to fraction form
    43,373.52/65,037.24 = 19,980/x
  3. Step 3: Cross multiply
    43,373.52x = 65,037.24 × 19,980
  4. Step 4: Simplify right side
    43,373.52x = 1,299,444,055.20
  5. Step 5: Solve for x
    x = 1,299,444,055.20/43,373.52
  6. Step 6: Final answer
    x = 29,959.39

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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.