Home / 85,081.04-127,617.67-31,768.86

Finding the Fourth Proportional to 85,081.04, 127,617.67 and 31,768.86

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Solution

The fourth proportional to 85,081.04, 127,617.67 and 31,768.86 is: 47,651.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,081.04 : 127,617.67 = 31,768.86 : x
  2. Step 2: Convert to fraction form
    85,081.04/127,617.67 = 31,768.86/x
  3. Step 3: Cross multiply
    85,081.04x = 127,617.67 × 31,768.86
  4. Step 4: Simplify right side
    85,081.04x = 4,054,267,891.76
  5. Step 5: Solve for x
    x = 4,054,267,891.76/85,081.04
  6. Step 6: Final answer
    x = 47,651.84

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1.5x scale

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.