Home / 78,938,847.93-118,399,226.94-20,652,152.84

Finding the Fourth Proportional to 78,938,847.93, 118,399,226.94 and 20,652,152.84

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Solution

The fourth proportional to 78,938,847.93, 118,399,226.94 and 20,652,152.84 is: 30,975,862.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,938,847.93 : 118,399,226.94 = 20,652,152.84 : x
  2. Step 2: Convert to fraction form
    78,938,847.93/118,399,226.94 = 20,652,152.84/x
  3. Step 3: Cross multiply
    78,938,847.93x = 118,399,226.94 × 20,652,152.84
  4. Step 4: Simplify right side
    78,938,847.93x = 2,445,198,930,310,729.50
  5. Step 5: Solve for x
    x = 2,445,198,930,310,729.50/78,938,847.93
  6. Step 6: Final answer
    x = 30,975,862.89

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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.