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Finding the Fourth Proportional to 66,807.57, 100,081.66 and 59,709.54

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Solution

The fourth proportional to 66,807.57, 100,081.66 and 59,709.54 is: 89,448.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,807.57 : 100,081.66 = 59,709.54 : x
  2. Step 2: Convert to fraction form
    66,807.57/100,081.66 = 59,709.54/x
  3. Step 3: Cross multiply
    66,807.57x = 100,081.66 × 59,709.54
  4. Step 4: Simplify right side
    66,807.57x = 5,975,829,881.04
  5. Step 5: Solve for x
    x = 5,975,829,881.04/66,807.57
  6. Step 6: Final answer
    x = 89,448.39

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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.