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Finding the Fourth Proportional to 66,996,981.60, 100,589,950.80 and 41,487,813.60

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Solution

The fourth proportional to 66,996,981.60, 100,589,950.80 and 41,487,813.60 is: 62,290,226.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,996,981.60 : 100,589,950.80 = 41,487,813.60 : x
  2. Step 2: Convert to fraction form
    66,996,981.60/100,589,950.80 = 41,487,813.60/x
  3. Step 3: Cross multiply
    66,996,981.60x = 100,589,950.80 × 41,487,813.60
  4. Step 4: Simplify right side
    66,996,981.60x = 4,173,257,128,823,571
  5. Step 5: Solve for x
    x = 4,173,257,128,823,571/66,996,981.60
  6. Step 6: Final answer
    x = 62,290,226.05

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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.