Home / 78,732,331.60-118,157,546.40-40,374,101.20

Finding the Fourth Proportional to 78,732,331.60, 118,157,546.40 and 40,374,101.20

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Solution

The fourth proportional to 78,732,331.60, 118,157,546.40 and 40,374,101.20 is: 60,591,432.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,732,331.60 : 118,157,546.40 = 40,374,101.20 : x
  2. Step 2: Convert to fraction form
    78,732,331.60/118,157,546.40 = 40,374,101.20/x
  3. Step 3: Cross multiply
    78,732,331.60x = 118,157,546.40 × 40,374,101.20
  4. Step 4: Simplify right side
    78,732,331.60x = 4,770,504,735,897,296
  5. Step 5: Solve for x
    x = 4,770,504,735,897,296/78,732,331.60
  6. Step 6: Final answer
    x = 60,591,432.25

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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.