Home / 86,990.72-120,045.17-51,183.05

Finding the Fourth Proportional to 86,990.72, 120,045.17 and 51,183.05

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Solution

The fourth proportional to 86,990.72, 120,045.17 and 51,183.05 is: 70,631.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,990.72 : 120,045.17 = 51,183.05 : x
  2. Step 2: Convert to fraction form
    86,990.72/120,045.17 = 51,183.05/x
  3. Step 3: Cross multiply
    86,990.72x = 120,045.17 × 51,183.05
  4. Step 4: Simplify right side
    86,990.72x = 6,144,277,082.23
  5. Step 5: Solve for x
    x = 6,144,277,082.23/86,990.72
  6. Step 6: Final answer
    x = 70,631.41

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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.