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Finding the Fourth Proportional to 69,011,697.80, 103,429,629.30 and 36,679,089.80

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Solution

The fourth proportional to 69,011,697.80, 103,429,629.30 and 36,679,089.80 is: 54,971,907.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,011,697.80 : 103,429,629.30 = 36,679,089.80 : x
  2. Step 2: Convert to fraction form
    69,011,697.80/103,429,629.30 = 36,679,089.80/x
  3. Step 3: Cross multiply
    69,011,697.80x = 103,429,629.30 × 36,679,089.80
  4. Step 4: Simplify right side
    69,011,697.80x = 3,793,704,661,075,410.50
  5. Step 5: Solve for x
    x = 3,793,704,661,075,410.50/69,011,697.80
  6. Step 6: Final answer
    x = 54,971,907.40

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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.