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Finding the Fourth Proportional to 66,864.88, 99,699.53 and 65,027.80

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Solution

The fourth proportional to 66,864.88, 99,699.53 and 65,027.80 is: 96,960.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,864.88 : 99,699.53 = 65,027.80 : x
  2. Step 2: Convert to fraction form
    66,864.88/99,699.53 = 65,027.80/x
  3. Step 3: Cross multiply
    66,864.88x = 99,699.53 × 65,027.80
  4. Step 4: Simplify right side
    66,864.88x = 6,483,241,096.93
  5. Step 5: Solve for x
    x = 6,483,241,096.93/66,864.88
  6. Step 6: Final answer
    x = 96,960.33

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.