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Finding the Fourth Proportional to 66,179,084.80, 99,277,958.40 and 20,736,140.80

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Solution

The fourth proportional to 66,179,084.80, 99,277,958.40 and 20,736,140.80 is: 31,107,134.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,179,084.80 : 99,277,958.40 = 20,736,140.80 : x
  2. Step 2: Convert to fraction form
    66,179,084.80/99,277,958.40 = 20,736,140.80/x
  3. Step 3: Cross multiply
    66,179,084.80x = 99,277,958.40 × 20,736,140.80
  4. Step 4: Simplify right side
    66,179,084.80x = 2,058,641,723,718,943
  5. Step 5: Solve for x
    x = 2,058,641,723,718,943/66,179,084.80
  6. Step 6: Final answer
    x = 31,107,134.98

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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.