Home / 82,777.32-124,184.50-30,186.81

Finding the Fourth Proportional to 82,777.32, 124,184.50 and 30,186.81

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Solution

The fourth proportional to 82,777.32, 124,184.50 and 30,186.81 is: 45,286.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,777.32 : 124,184.50 = 30,186.81 : x
  2. Step 2: Convert to fraction form
    82,777.32/124,184.50 = 30,186.81/x
  3. Step 3: Cross multiply
    82,777.32x = 124,184.50 × 30,186.81
  4. Step 4: Simplify right side
    82,777.32x = 3,748,733,830.98
  5. Step 5: Solve for x
    x = 3,748,733,830.98/82,777.32
  6. Step 6: Final answer
    x = 45,286.97

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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.