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Finding the Fourth Proportional to 89,698.86, 134,578.26 and 39,772.08

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Solution

The fourth proportional to 89,698.86, 134,578.26 and 39,772.08 is: 59,671.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,698.86 : 134,578.26 = 39,772.08 : x
  2. Step 2: Convert to fraction form
    89,698.86/134,578.26 = 39,772.08/x
  3. Step 3: Cross multiply
    89,698.86x = 134,578.26 × 39,772.08
  4. Step 4: Simplify right side
    89,698.86x = 5,352,457,322.98
  5. Step 5: Solve for x
    x = 5,352,457,322.98/89,698.86
  6. Step 6: Final answer
    x = 59,671.41

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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.