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Finding the Fourth Proportional to 66,208, 99,312.91 and 36,683.50

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Solution

The fourth proportional to 66,208, 99,312.91 and 36,683.50 is: 55,025.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,208 : 99,312.91 = 36,683.50 : x
  2. Step 2: Convert to fraction form
    66,208/99,312.91 = 36,683.50/x
  3. Step 3: Cross multiply
    66,208x = 99,312.91 × 36,683.50
  4. Step 4: Simplify right side
    66,208x = 3,643,145,133.99
  5. Step 5: Solve for x
    x = 3,643,145,133.99/66,208
  6. Step 6: Final answer
    x = 55,025.75

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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.