Home / 78,218,112.58-107,935,967.01-43,410,826.60

Finding the Fourth Proportional to 78,218,112.58, 107,935,967.01 and 43,410,826.60

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Solution

The fourth proportional to 78,218,112.58, 107,935,967.01 and 43,410,826.60 is: 59,904,149.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,218,112.58 : 107,935,967.01 = 43,410,826.60 : x
  2. Step 2: Convert to fraction form
    78,218,112.58/107,935,967.01 = 43,410,826.60/x
  3. Step 3: Cross multiply
    78,218,112.58x = 107,935,967.01 × 43,410,826.60
  4. Step 4: Simplify right side
    78,218,112.58x = 4,685,589,547,774,431
  5. Step 5: Solve for x
    x = 4,685,589,547,774,431/78,218,112.58
  6. Step 6: Final answer
    x = 59,904,149.99

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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.