Home / 78,605,749.42-108,471,507.44-43,323,447.58

Finding the Fourth Proportional to 78,605,749.42, 108,471,507.44 and 43,323,447.58

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Solution

The fourth proportional to 78,605,749.42, 108,471,507.44 and 43,323,447.58 is: 59,783,917.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,605,749.42 : 108,471,507.44 = 43,323,447.58 : x
  2. Step 2: Convert to fraction form
    78,605,749.42/108,471,507.44 = 43,323,447.58/x
  3. Step 3: Cross multiply
    78,605,749.42x = 108,471,507.44 × 43,323,447.58
  4. Step 4: Simplify right side
    78,605,749.42x = 4,699,359,666,500,420
  5. Step 5: Solve for x
    x = 4,699,359,666,500,420/78,605,749.42
  6. Step 6: Final answer
    x = 59,783,917.86

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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.