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Finding the Fourth Proportional to 80,773,989.60, 121,161,675.60 and 26,921,301.60

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Solution

The fourth proportional to 80,773,989.60, 121,161,675.60 and 26,921,301.60 is: 40,382,182.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,773,989.60 : 121,161,675.60 = 26,921,301.60 : x
  2. Step 2: Convert to fraction form
    80,773,989.60/121,161,675.60 = 26,921,301.60/x
  3. Step 3: Cross multiply
    80,773,989.60x = 121,161,675.60 × 26,921,301.60
  4. Step 4: Simplify right side
    80,773,989.60x = 3,261,830,011,188,961
  5. Step 5: Solve for x
    x = 3,261,830,011,188,961/80,773,989.60
  6. Step 6: Final answer
    x = 40,382,182.77

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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.