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Finding the Fourth Proportional to 87,968, 121,403.52 and 48,231.68

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Solution

The fourth proportional to 87,968, 121,403.52 and 48,231.68 is: 66,563.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,968 : 121,403.52 = 48,231.68 : x
  2. Step 2: Convert to fraction form
    87,968/121,403.52 = 48,231.68/x
  3. Step 3: Cross multiply
    87,968x = 121,403.52 × 48,231.68
  4. Step 4: Simplify right side
    87,968x = 5,855,495,727.51
  5. Step 5: Solve for x
    x = 5,855,495,727.51/87,968
  6. Step 6: Final answer
    x = 66,563.93

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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.