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Finding the Fourth Proportional to 66,734,855.60, 100,102,283.40 and 52,402,132.40

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Solution

The fourth proportional to 66,734,855.60, 100,102,283.40 and 52,402,132.40 is: 78,603,198.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,734,855.60 : 100,102,283.40 = 52,402,132.40 : x
  2. Step 2: Convert to fraction form
    66,734,855.60/100,102,283.40 = 52,402,132.40/x
  3. Step 3: Cross multiply
    66,734,855.60x = 100,102,283.40 × 52,402,132.40
  4. Step 4: Simplify right side
    66,734,855.60x = 5,245,573,108,269,122
  5. Step 5: Solve for x
    x = 5,245,573,108,269,122/66,734,855.60
  6. Step 6: Final answer
    x = 78,603,198.60

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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.