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Finding the Fourth Proportional to 30,339,722.60, 45,509,583.90 and 12,152,630.60

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Solution

The fourth proportional to 30,339,722.60, 45,509,583.90 and 12,152,630.60 is: 18,228,945.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,339,722.60 : 45,509,583.90 = 12,152,630.60 : x
  2. Step 2: Convert to fraction form
    30,339,722.60/45,509,583.90 = 12,152,630.60/x
  3. Step 3: Cross multiply
    30,339,722.60x = 45,509,583.90 × 12,152,630.60
  4. Step 4: Simplify right side
    30,339,722.60x = 553,061,161,896,407.31
  5. Step 5: Solve for x
    x = 553,061,161,896,407.31/30,339,722.60
  6. Step 6: Final answer
    x = 18,228,945.90

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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.