Home / 77,781.77-107,294.11-49,091.23

Finding the Fourth Proportional to 77,781.77, 107,294.11 and 49,091.23

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Solution

The fourth proportional to 77,781.77, 107,294.11 and 49,091.23 is: 67,717.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,781.77 : 107,294.11 = 49,091.23 : x
  2. Step 2: Convert to fraction form
    77,781.77/107,294.11 = 49,091.23/x
  3. Step 3: Cross multiply
    77,781.77x = 107,294.11 × 49,091.23
  4. Step 4: Simplify right side
    77,781.77x = 5,267,199,708.93
  5. Step 5: Solve for x
    x = 5,267,199,708.93/77,781.77
  6. Step 6: Final answer
    x = 67,717.67

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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.