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Finding the Fourth Proportional to 66,652.28, 99,978.54 and 19,901.48

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Solution

The fourth proportional to 66,652.28, 99,978.54 and 19,901.48 is: 29,852.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,652.28 : 99,978.54 = 19,901.48 : x
  2. Step 2: Convert to fraction form
    66,652.28/99,978.54 = 19,901.48/x
  3. Step 3: Cross multiply
    66,652.28x = 99,978.54 × 19,901.48
  4. Step 4: Simplify right side
    66,652.28x = 1,989,720,914.24
  5. Step 5: Solve for x
    x = 1,989,720,914.24/66,652.28
  6. Step 6: Final answer
    x = 29,852.26

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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.