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Finding the Fourth Proportional to 80,657,645.60, 120,986,468.40 and 26,804,957.60

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Solution

The fourth proportional to 80,657,645.60, 120,986,468.40 and 26,804,957.60 is: 40,207,436.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,657,645.60 : 120,986,468.40 = 26,804,957.60 : x
  2. Step 2: Convert to fraction form
    80,657,645.60/120,986,468.40 = 26,804,957.60/x
  3. Step 3: Cross multiply
    80,657,645.60x = 120,986,468.40 × 26,804,957.60
  4. Step 4: Simplify right side
    80,657,645.60x = 3,243,037,155,635,740
  5. Step 5: Solve for x
    x = 3,243,037,155,635,740/80,657,645.60
  6. Step 6: Final answer
    x = 40,207,436.40

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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.