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Finding the Fourth Proportional to 30,974,469.60, 46,461,704.40 and 18,881,234.40

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Solution

The fourth proportional to 30,974,469.60, 46,461,704.40 and 18,881,234.40 is: 28,321,851.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,974,469.60 : 46,461,704.40 = 18,881,234.40 : x
  2. Step 2: Convert to fraction form
    30,974,469.60/46,461,704.40 = 18,881,234.40/x
  3. Step 3: Cross multiply
    30,974,469.60x = 46,461,704.40 × 18,881,234.40
  4. Step 4: Simplify right side
    30,974,469.60x = 877,254,331,399,911.25
  5. Step 5: Solve for x
    x = 877,254,331,399,911.25/30,974,469.60
  6. Step 6: Final answer
    x = 28,321,851.60

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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.