Home / 78,580.10-108,442.89-48,382.85

Finding the Fourth Proportional to 78,580.10, 108,442.89 and 48,382.85

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Solution

The fourth proportional to 78,580.10, 108,442.89 and 48,382.85 is: 66,769.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,580.10 : 108,442.89 = 48,382.85 : x
  2. Step 2: Convert to fraction form
    78,580.10/108,442.89 = 48,382.85/x
  3. Step 3: Cross multiply
    78,580.10x = 108,442.89 × 48,382.85
  4. Step 4: Simplify right side
    78,580.10x = 5,246,775,538.22
  5. Step 5: Solve for x
    x = 5,246,775,538.22/78,580.10
  6. Step 6: Final answer
    x = 66,769.77

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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.