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Finding the Fourth Proportional to 66,721,495.92, 100,103,705.88 and 30,342,879.60

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Solution

The fourth proportional to 66,721,495.92, 100,103,705.88 and 30,342,879.60 is: 45,524,079.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,721,495.92 : 100,103,705.88 = 30,342,879.60 : x
  2. Step 2: Convert to fraction form
    66,721,495.92/100,103,705.88 = 30,342,879.60/x
  3. Step 3: Cross multiply
    66,721,495.92x = 100,103,705.88 × 30,342,879.60
  4. Step 4: Simplify right side
    66,721,495.92x = 3,037,434,695,030,652
  5. Step 5: Solve for x
    x = 3,037,434,695,030,652/66,721,495.92
  6. Step 6: Final answer
    x = 45,524,079.66

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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.