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Finding the Fourth Proportional to 66,806,670.60, 100,219,337.10 and 28,467,880.20

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Solution

The fourth proportional to 66,806,670.60, 100,219,337.10 and 28,467,880.20 is: 42,705,796.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,806,670.60 : 100,219,337.10 = 28,467,880.20 : x
  2. Step 2: Convert to fraction form
    66,806,670.60/100,219,337.10 = 28,467,880.20/x
  3. Step 3: Cross multiply
    66,806,670.60x = 100,219,337.10 × 28,467,880.20
  4. Step 4: Simplify right side
    66,806,670.60x = 2,853,032,082,286,215
  5. Step 5: Solve for x
    x = 2,853,032,082,286,215/66,806,670.60
  6. Step 6: Final answer
    x = 42,705,796.54

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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.