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Finding the Fourth Proportional to 80,657,646.60, 120,986,469.90 and 26,804,958.60

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Solution

The fourth proportional to 80,657,646.60, 120,986,469.90 and 26,804,958.60 is: 40,207,437.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,657,646.60 : 120,986,469.90 = 26,804,958.60 : x
  2. Step 2: Convert to fraction form
    80,657,646.60/120,986,469.90 = 26,804,958.60/x
  3. Step 3: Cross multiply
    80,657,646.60x = 120,986,469.90 × 26,804,958.60
  4. Step 4: Simplify right side
    80,657,646.60x = 3,243,037,316,829,646.50
  5. Step 5: Solve for x
    x = 3,243,037,316,829,646.50/80,657,646.60
  6. Step 6: Final answer
    x = 40,207,437.90

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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.