Home / 20,761,209.45-31,141,825.02-5,408,458.50

Finding the Fourth Proportional to 20,761,209.45, 31,141,825.02 and 5,408,458.50

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Solution

The fourth proportional to 20,761,209.45, 31,141,825.02 and 5,408,458.50 is: 8,112,690.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,761,209.45 : 31,141,825.02 = 5,408,458.50 : x
  2. Step 2: Convert to fraction form
    20,761,209.45/31,141,825.02 = 5,408,458.50/x
  3. Step 3: Cross multiply
    20,761,209.45x = 31,141,825.02 × 5,408,458.50
  4. Step 4: Simplify right side
    20,761,209.45x = 168,429,268,234,931.66
  5. Step 5: Solve for x
    x = 168,429,268,234,931.66/20,761,209.45
  6. Step 6: Final answer
    x = 8,112,690.58

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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.