Home / 78,821,071.45-108,776,383.16-45,330,576.68

Finding the Fourth Proportional to 78,821,071.45, 108,776,383.16 and 45,330,576.68

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Solution

The fourth proportional to 78,821,071.45, 108,776,383.16 and 45,330,576.68 is: 62,558,096.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,821,071.45 : 108,776,383.16 = 45,330,576.68 : x
  2. Step 2: Convert to fraction form
    78,821,071.45/108,776,383.16 = 45,330,576.68/x
  3. Step 3: Cross multiply
    78,821,071.45x = 108,776,383.16 × 45,330,576.68
  4. Step 4: Simplify right side
    78,821,071.45x = 4,930,896,177,495,620
  5. Step 5: Solve for x
    x = 4,930,896,177,495,620/78,821,071.45
  6. Step 6: Final answer
    x = 62,558,096.29

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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.