Home / 20,125,970.40-30,188,955.60-4,979,901.90

Finding the Fourth Proportional to 20,125,970.40, 30,188,955.60 and 4,979,901.90

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Solution

The fourth proportional to 20,125,970.40, 30,188,955.60 and 4,979,901.90 is: 7,469,852.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,125,970.40 : 30,188,955.60 = 4,979,901.90 : x
  2. Step 2: Convert to fraction form
    20,125,970.40/30,188,955.60 = 4,979,901.90/x
  3. Step 3: Cross multiply
    20,125,970.40x = 30,188,955.60 × 4,979,901.90
  4. Step 4: Simplify right side
    20,125,970.40x = 150,338,037,351,455.66
  5. Step 5: Solve for x
    x = 150,338,037,351,455.66/20,125,970.40
  6. Step 6: Final answer
    x = 7,469,852.85

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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.