Home / 80,862,316.20-121,210,805.70-39,858,690.60

Finding the Fourth Proportional to 80,862,316.20, 121,210,805.70 and 39,858,690.60

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Solution

The fourth proportional to 80,862,316.20, 121,210,805.70 and 39,858,690.60 is: 59,747,286.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,862,316.20 : 121,210,805.70 = 39,858,690.60 : x
  2. Step 2: Convert to fraction form
    80,862,316.20/121,210,805.70 = 39,858,690.60/x
  3. Step 3: Cross multiply
    80,862,316.20x = 121,210,805.70 × 39,858,690.60
  4. Step 4: Simplify right side
    80,862,316.20x = 4,831,304,001,773,017
  5. Step 5: Solve for x
    x = 4,831,304,001,773,017/80,862,316.20
  6. Step 6: Final answer
    x = 59,747,286.86

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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.