Home / 78,991.46-118,382.39-34,569.85

Finding the Fourth Proportional to 78,991.46, 118,382.39 and 34,569.85

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Solution

The fourth proportional to 78,991.46, 118,382.39 and 34,569.85 is: 51,808.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,991.46 : 118,382.39 = 34,569.85 : x
  2. Step 2: Convert to fraction form
    78,991.46/118,382.39 = 34,569.85/x
  3. Step 3: Cross multiply
    78,991.46x = 118,382.39 × 34,569.85
  4. Step 4: Simplify right side
    78,991.46x = 4,092,461,464.94
  5. Step 5: Solve for x
    x = 4,092,461,464.94/78,991.46
  6. Step 6: Final answer
    x = 51,808.91

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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.