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Finding the Fourth Proportional to 71,994,943.20, 107,992,414.80 and 57,646,036.20

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Solution

The fourth proportional to 71,994,943.20, 107,992,414.80 and 57,646,036.20 is: 86,469,054.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,994,943.20 : 107,992,414.80 = 57,646,036.20 : x
  2. Step 2: Convert to fraction form
    71,994,943.20/107,992,414.80 = 57,646,036.20/x
  3. Step 3: Cross multiply
    71,994,943.20x = 107,992,414.80 × 57,646,036.20
  4. Step 4: Simplify right side
    71,994,943.20x = 6,225,334,652,886,216
  5. Step 5: Solve for x
    x = 6,225,334,652,886,216/71,994,943.20
  6. Step 6: Final answer
    x = 86,469,054.30

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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.