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Finding the Fourth Proportional to 66,060.96, 99,100.26 and 19,313.16

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Solution

The fourth proportional to 66,060.96, 99,100.26 and 19,313.16 is: 28,972.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,060.96 : 99,100.26 = 19,313.16 : x
  2. Step 2: Convert to fraction form
    66,060.96/99,100.26 = 19,313.16/x
  3. Step 3: Cross multiply
    66,060.96x = 99,100.26 × 19,313.16
  4. Step 4: Simplify right side
    66,060.96x = 1,913,939,177.42
  5. Step 5: Solve for x
    x = 1,913,939,177.42/66,060.96
  6. Step 6: Final answer
    x = 28,972.32

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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.