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Finding the Fourth Proportional to 66,734,858.60, 100,102,287.90 and 52,402,135.40

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Solution

The fourth proportional to 66,734,858.60, 100,102,287.90 and 52,402,135.40 is: 78,603,203.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,734,858.60 : 100,102,287.90 = 52,402,135.40 : x
  2. Step 2: Convert to fraction form
    66,734,858.60/100,102,287.90 = 52,402,135.40/x
  3. Step 3: Cross multiply
    66,734,858.60x = 100,102,287.90 × 52,402,135.40
  4. Step 4: Simplify right side
    66,734,858.60x = 5,245,573,644,385,582
  5. Step 5: Solve for x
    x = 5,245,573,644,385,582/66,734,858.60
  6. Step 6: Final answer
    x = 78,603,203.10

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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.