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Finding the Fourth Proportional to 66,171,602.60, 99,260,514.30 and 20,734,879.40

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Solution

The fourth proportional to 66,171,602.60, 99,260,514.30 and 20,734,879.40 is: 31,103,293.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,171,602.60 : 99,260,514.30 = 20,734,879.40 : x
  2. Step 2: Convert to fraction form
    66,171,602.60/99,260,514.30 = 20,734,879.40/x
  3. Step 3: Cross multiply
    66,171,602.60x = 99,260,514.30 × 20,734,879.40
  4. Step 4: Simplify right side
    66,171,602.60x = 2,058,154,793,192,475.25
  5. Step 5: Solve for x
    x = 2,058,154,793,192,475.25/66,171,602.60
  6. Step 6: Final answer
    x = 31,103,293.74

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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.