Home / 30,285,141.80-45,427,712.70-18,191,906.60

Finding the Fourth Proportional to 30,285,141.80, 45,427,712.70 and 18,191,906.60

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Solution

The fourth proportional to 30,285,141.80, 45,427,712.70 and 18,191,906.60 is: 27,287,859.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,285,141.80 : 45,427,712.70 = 18,191,906.60 : x
  2. Step 2: Convert to fraction form
    30,285,141.80/45,427,712.70 = 18,191,906.60/x
  3. Step 3: Cross multiply
    30,285,141.80x = 45,427,712.70 × 18,191,906.60
  4. Step 4: Simplify right side
    30,285,141.80x = 826,416,706,490,034
  5. Step 5: Solve for x
    x = 826,416,706,490,034/30,285,141.80
  6. Step 6: Final answer
    x = 27,287,859.90

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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.