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Finding the Fourth Proportional to 66,475.69, 99,657.60 and 30,918.94

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Solution

The fourth proportional to 66,475.69, 99,657.60 and 30,918.94 is: 46,352.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,475.69 : 99,657.60 = 30,918.94 : x
  2. Step 2: Convert to fraction form
    66,475.69/99,657.60 = 30,918.94/x
  3. Step 3: Cross multiply
    66,475.69x = 99,657.60 × 30,918.94
  4. Step 4: Simplify right side
    66,475.69x = 3,081,307,487.54
  5. Step 5: Solve for x
    x = 3,081,307,487.54/66,475.69
  6. Step 6: Final answer
    x = 46,352.40

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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.