Home / 78,218,645.60-117,439,942.80-44,206,421.60

Finding the Fourth Proportional to 78,218,645.60, 117,439,942.80 and 44,206,421.60

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Solution

The fourth proportional to 78,218,645.60, 117,439,942.80 and 44,206,421.60 is: 66,372,916.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,218,645.60 : 117,439,942.80 = 44,206,421.60 : x
  2. Step 2: Convert to fraction form
    78,218,645.60/117,439,942.80 = 44,206,421.60/x
  3. Step 3: Cross multiply
    78,218,645.60x = 117,439,942.80 × 44,206,421.60
  4. Step 4: Simplify right side
    78,218,645.60x = 5,191,599,624,096,685
  5. Step 5: Solve for x
    x = 5,191,599,624,096,685/78,218,645.60
  6. Step 6: Final answer
    x = 66,372,916.38

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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.