Home / 40,274,579.20-55,578,646.40-21,939,877.12

Finding the Fourth Proportional to 40,274,579.20, 55,578,646.40 and 21,939,877.12

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Solution

The fourth proportional to 40,274,579.20, 55,578,646.40 and 21,939,877.12 is: 30,276,881.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,274,579.20 : 55,578,646.40 = 21,939,877.12 : x
  2. Step 2: Convert to fraction form
    40,274,579.20/55,578,646.40 = 21,939,877.12/x
  3. Step 3: Cross multiply
    40,274,579.20x = 55,578,646.40 × 21,939,877.12
  4. Step 4: Simplify right side
    40,274,579.20x = 1,219,388,672,511,930.50
  5. Step 5: Solve for x
    x = 1,219,388,672,511,930.50/40,274,579.20
  6. Step 6: Final answer
    x = 30,276,881.76

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.