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Finding the Fourth Proportional to 66,529,756.80, 99,794,635.20 and 30,697,948.80

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Solution

The fourth proportional to 66,529,756.80, 99,794,635.20 and 30,697,948.80 is: 46,046,923.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,529,756.80 : 99,794,635.20 = 30,697,948.80 : x
  2. Step 2: Convert to fraction form
    66,529,756.80/99,794,635.20 = 30,697,948.80/x
  3. Step 3: Cross multiply
    66,529,756.80x = 99,794,635.20 × 30,697,948.80
  4. Step 4: Simplify right side
    66,529,756.80x = 3,063,490,601,884,278
  5. Step 5: Solve for x
    x = 3,063,490,601,884,278/66,529,756.80
  6. Step 6: Final answer
    x = 46,046,923.20

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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.