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Finding the Fourth Proportional to 81,607,935.60, 122,411,903.40 and 30,483,311.40

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Solution

The fourth proportional to 81,607,935.60, 122,411,903.40 and 30,483,311.40 is: 45,724,967.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,607,935.60 : 122,411,903.40 = 30,483,311.40 : x
  2. Step 2: Convert to fraction form
    81,607,935.60/122,411,903.40 = 30,483,311.40/x
  3. Step 3: Cross multiply
    81,607,935.60x = 122,411,903.40 × 30,483,311.40
  4. Step 4: Simplify right side
    81,607,935.60x = 3,731,520,170,408,919
  5. Step 5: Solve for x
    x = 3,731,520,170,408,919/81,607,935.60
  6. Step 6: Final answer
    x = 45,724,967.10

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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.