Home / 81,071.08-111,879.68-47,082.40

Finding the Fourth Proportional to 81,071.08, 111,879.68 and 47,082.40

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Solution

The fourth proportional to 81,071.08, 111,879.68 and 47,082.40 is: 64,974.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,071.08 : 111,879.68 = 47,082.40 : x
  2. Step 2: Convert to fraction form
    81,071.08/111,879.68 = 47,082.40/x
  3. Step 3: Cross multiply
    81,071.08x = 111,879.68 × 47,082.40
  4. Step 4: Simplify right side
    81,071.08x = 5,267,563,845.63
  5. Step 5: Solve for x
    x = 5,267,563,845.63/81,071.08
  6. Step 6: Final answer
    x = 64,974.64

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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.