Home / 66,289.86-99,439.29-18,908.64

Finding the Fourth Proportional to 66,289.86, 99,439.29 and 18,908.64

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Solution

The fourth proportional to 66,289.86, 99,439.29 and 18,908.64 is: 28,364.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,289.86 : 99,439.29 = 18,908.64 : x
  2. Step 2: Convert to fraction form
    66,289.86/99,439.29 = 18,908.64/x
  3. Step 3: Cross multiply
    66,289.86x = 99,439.29 × 18,908.64
  4. Step 4: Simplify right side
    66,289.86x = 1,880,261,736.47
  5. Step 5: Solve for x
    x = 1,880,261,736.47/66,289.86
  6. Step 6: Final answer
    x = 28,364.24

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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.