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Finding the Fourth Proportional to 115,715.16, 173,671.37 and 45,643.68

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Solution

The fourth proportional to 115,715.16, 173,671.37 and 45,643.68 is: 68,504.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,715.16 : 173,671.37 = 45,643.68 : x
  2. Step 2: Convert to fraction form
    115,715.16/173,671.37 = 45,643.68/x
  3. Step 3: Cross multiply
    115,715.16x = 173,671.37 × 45,643.68
  4. Step 4: Simplify right side
    115,715.16x = 7,927,000,209.22
  5. Step 5: Solve for x
    x = 7,927,000,209.22/115,715.16
  6. Step 6: Final answer
    x = 68,504.42

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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.