Home / 28,269,139.20-42,403,708.80-19,311,187.20

Finding the Fourth Proportional to 28,269,139.20, 42,403,708.80 and 19,311,187.20

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Solution

The fourth proportional to 28,269,139.20, 42,403,708.80 and 19,311,187.20 is: 28,966,780.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,269,139.20 : 42,403,708.80 = 19,311,187.20 : x
  2. Step 2: Convert to fraction form
    28,269,139.20/42,403,708.80 = 19,311,187.20/x
  3. Step 3: Cross multiply
    28,269,139.20x = 42,403,708.80 × 19,311,187.20
  4. Step 4: Simplify right side
    28,269,139.20x = 818,865,958,611,087.25
  5. Step 5: Solve for x
    x = 818,865,958,611,087.25/28,269,139.20
  6. Step 6: Final answer
    x = 28,966,780.80

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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.