Home / 30,271,362.30-45,407,043.45-21,183,721.20

Finding the Fourth Proportional to 30,271,362.30, 45,407,043.45 and 21,183,721.20

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Solution

The fourth proportional to 30,271,362.30, 45,407,043.45 and 21,183,721.20 is: 31,775,581.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,271,362.30 : 45,407,043.45 = 21,183,721.20 : x
  2. Step 2: Convert to fraction form
    30,271,362.30/45,407,043.45 = 21,183,721.20/x
  3. Step 3: Cross multiply
    30,271,362.30x = 45,407,043.45 × 21,183,721.20
  4. Step 4: Simplify right side
    30,271,362.30x = 961,890,148,961,086.12
  5. Step 5: Solve for x
    x = 961,890,148,961,086.12/30,271,362.30
  6. Step 6: Final answer
    x = 31,775,581.80

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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.