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Finding the Fourth Proportional to 70,065,794.70, 105,098,692.05 and 40,889,683.80

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Solution

The fourth proportional to 70,065,794.70, 105,098,692.05 and 40,889,683.80 is: 61,334,525.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,065,794.70 : 105,098,692.05 = 40,889,683.80 : x
  2. Step 2: Convert to fraction form
    70,065,794.70/105,098,692.05 = 40,889,683.80/x
  3. Step 3: Cross multiply
    70,065,794.70x = 105,098,692.05 × 40,889,683.80
  4. Step 4: Simplify right side
    70,065,794.70x = 4,297,452,285,718,073.50
  5. Step 5: Solve for x
    x = 4,297,452,285,718,073.50/70,065,794.70
  6. Step 6: Final answer
    x = 61,334,525.70

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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.