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Finding the Fourth Proportional to 66,295.86, 99,448.29 and 18,914.64

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Solution

The fourth proportional to 66,295.86, 99,448.29 and 18,914.64 is: 28,373.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,295.86 : 99,448.29 = 18,914.64 : x
  2. Step 2: Convert to fraction form
    66,295.86/99,448.29 = 18,914.64/x
  3. Step 3: Cross multiply
    66,295.86x = 99,448.29 × 18,914.64
  4. Step 4: Simplify right side
    66,295.86x = 1,881,028,603.97
  5. Step 5: Solve for x
    x = 1,881,028,603.97/66,295.86
  6. Step 6: Final answer
    x = 28,373.24

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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.