Home / 69,979,929.32-104,957,930.28-18,849,990.72

Finding the Fourth Proportional to 69,979,929.32, 104,957,930.28 and 18,849,990.72

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Solution

The fourth proportional to 69,979,929.32, 104,957,930.28 and 18,849,990.72 is: 28,271,763.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,979,929.32 : 104,957,930.28 = 18,849,990.72 : x
  2. Step 2: Convert to fraction form
    69,979,929.32/104,957,930.28 = 18,849,990.72/x
  3. Step 3: Cross multiply
    69,979,929.32x = 104,957,930.28 × 18,849,990.72
  4. Step 4: Simplify right side
    69,979,929.32x = 1,978,456,011,768,407
  5. Step 5: Solve for x
    x = 1,978,456,011,768,407/69,979,929.32
  6. Step 6: Final answer
    x = 28,271,763.50

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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.