Home / 80,713.12-111,307.44-48,442.72

Finding the Fourth Proportional to 80,713.12, 111,307.44 and 48,442.72

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Solution

The fourth proportional to 80,713.12, 111,307.44 and 48,442.72 is: 66,804.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,713.12 : 111,307.44 = 48,442.72 : x
  2. Step 2: Convert to fraction form
    80,713.12/111,307.44 = 48,442.72/x
  3. Step 3: Cross multiply
    80,713.12x = 111,307.44 × 48,442.72
  4. Step 4: Simplify right side
    80,713.12x = 5,392,035,149.84
  5. Step 5: Solve for x
    x = 5,392,035,149.84/80,713.12
  6. Step 6: Final answer
    x = 66,804.94

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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.