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Finding the Fourth Proportional to 66,430,003.30, 99,645,004.95 and 18,560,947.30

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Solution

The fourth proportional to 66,430,003.30, 99,645,004.95 and 18,560,947.30 is: 27,841,420.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,430,003.30 : 99,645,004.95 = 18,560,947.30 : x
  2. Step 2: Convert to fraction form
    66,430,003.30/99,645,004.95 = 18,560,947.30/x
  3. Step 3: Cross multiply
    66,430,003.30x = 99,645,004.95 × 18,560,947.30
  4. Step 4: Simplify right side
    66,430,003.30x = 1,849,505,685,585,189.25
  5. Step 5: Solve for x
    x = 1,849,505,685,585,189.25/66,430,003.30
  6. Step 6: Final answer
    x = 27,841,420.95

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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.