Home / 78,880.08-108,857.09-43,072.82

Finding the Fourth Proportional to 78,880.08, 108,857.09 and 43,072.82

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Solution

The fourth proportional to 78,880.08, 108,857.09 and 43,072.82 is: 59,441.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,880.08 : 108,857.09 = 43,072.82 : x
  2. Step 2: Convert to fraction form
    78,880.08/108,857.09 = 43,072.82/x
  3. Step 3: Cross multiply
    78,880.08x = 108,857.09 × 43,072.82
  4. Step 4: Simplify right side
    78,880.08x = 4,688,781,083.64
  5. Step 5: Solve for x
    x = 4,688,781,083.64/78,880.08
  6. Step 6: Final answer
    x = 59,441.89

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1.5x scale

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.