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Finding the Fourth Proportional to 89,897,661.60, 134,846,492.40 and 80,323,850.40

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Solution

The fourth proportional to 89,897,661.60, 134,846,492.40 and 80,323,850.40 is: 120,485,775.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,897,661.60 : 134,846,492.40 = 80,323,850.40 : x
  2. Step 2: Convert to fraction form
    89,897,661.60/134,846,492.40 = 80,323,850.40/x
  3. Step 3: Cross multiply
    89,897,661.60x = 134,846,492.40 × 80,323,850.40
  4. Step 4: Simplify right side
    89,897,661.60x = 10,831,389,482,502,338
  5. Step 5: Solve for x
    x = 10,831,389,482,502,338/89,897,661.60
  6. Step 6: Final answer
    x = 120,485,775.60

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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.