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Finding the Fourth Proportional to 66,806,669.60, 100,219,335.60 and 28,467,879.20

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Solution

The fourth proportional to 66,806,669.60, 100,219,335.60 and 28,467,879.20 is: 42,705,795.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,806,669.60 : 100,219,335.60 = 28,467,879.20 : x
  2. Step 2: Convert to fraction form
    66,806,669.60/100,219,335.60 = 28,467,879.20/x
  3. Step 3: Cross multiply
    66,806,669.60x = 100,219,335.60 × 28,467,879.20
  4. Step 4: Simplify right side
    66,806,669.60x = 2,853,031,939,365,059.50
  5. Step 5: Solve for x
    x = 2,853,031,939,365,059.50/66,806,669.60
  6. Step 6: Final answer
    x = 42,705,795.04

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1.5x scale

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.