Home / 89,642.42-123,713.70-51,405.48

Finding the Fourth Proportional to 89,642.42, 123,713.70 and 51,405.48

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Solution

The fourth proportional to 89,642.42, 123,713.70 and 51,405.48 is: 70,943.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,642.42 : 123,713.70 = 51,405.48 : x
  2. Step 2: Convert to fraction form
    89,642.42/123,713.70 = 51,405.48/x
  3. Step 3: Cross multiply
    89,642.42x = 123,713.70 × 51,405.48
  4. Step 4: Simplify right side
    89,642.42x = 6,359,562,131.08
  5. Step 5: Solve for x
    x = 6,359,562,131.08/89,642.42
  6. Step 6: Final answer
    x = 70,943.67

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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.