Home / 78,378,389.06-108,162,965.54-43,098,054.98

Finding the Fourth Proportional to 78,378,389.06, 108,162,965.54 and 43,098,054.98

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Solution

The fourth proportional to 78,378,389.06, 108,162,965.54 and 43,098,054.98 is: 59,475,749.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,378,389.06 : 108,162,965.54 = 43,098,054.98 : x
  2. Step 2: Convert to fraction form
    78,378,389.06/108,162,965.54 = 43,098,054.98/x
  3. Step 3: Cross multiply
    78,378,389.06x = 108,162,965.54 × 43,098,054.98
  4. Step 4: Simplify right side
    78,378,389.06x = 4,661,613,435,427,275
  5. Step 5: Solve for x
    x = 4,661,613,435,427,275/78,378,389.06
  6. Step 6: Final answer
    x = 59,475,749.52

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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.