Home / 78,815.67-118,286.55-41,397.81

Finding the Fourth Proportional to 78,815.67, 118,286.55 and 41,397.81

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Solution

The fourth proportional to 78,815.67, 118,286.55 and 41,397.81 is: 62,129.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,815.67 : 118,286.55 = 41,397.81 : x
  2. Step 2: Convert to fraction form
    78,815.67/118,286.55 = 41,397.81/x
  3. Step 3: Cross multiply
    78,815.67x = 118,286.55 × 41,397.81
  4. Step 4: Simplify right side
    78,815.67x = 4,896,804,127.99
  5. Step 5: Solve for x
    x = 4,896,804,127.99/78,815.67
  6. Step 6: Final answer
    x = 62,129.83

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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.