Home / 45,709.20-68,530.64-30,881.36

Finding the Fourth Proportional to 45,709.20, 68,530.64 and 30,881.36

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Solution

The fourth proportional to 45,709.20, 68,530.64 and 30,881.36 is: 46,299.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,709.20 : 68,530.64 = 30,881.36 : x
  2. Step 2: Convert to fraction form
    45,709.20/68,530.64 = 30,881.36/x
  3. Step 3: Cross multiply
    45,709.20x = 68,530.64 × 30,881.36
  4. Step 4: Simplify right side
    45,709.20x = 2,116,319,364.87
  5. Step 5: Solve for x
    x = 2,116,319,364.87/45,709.20
  6. Step 6: Final answer
    x = 46,299.64

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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.