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Finding the Fourth Proportional to 66,309.51, 99,465.32 and 36,914.19

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Solution

The fourth proportional to 66,309.51, 99,465.32 and 36,914.19 is: 55,371.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,309.51 : 99,465.32 = 36,914.19 : x
  2. Step 2: Convert to fraction form
    66,309.51/99,465.32 = 36,914.19/x
  3. Step 3: Cross multiply
    66,309.51x = 99,465.32 × 36,914.19
  4. Step 4: Simplify right side
    66,309.51x = 3,671,681,440.18
  5. Step 5: Solve for x
    x = 3,671,681,440.18/66,309.51
  6. Step 6: Final answer
    x = 55,371.86

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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.