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Finding the Fourth Proportional to 78,468.96, 108,243.36 and 48,233.28

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Solution

The fourth proportional to 78,468.96, 108,243.36 and 48,233.28 is: 66,535.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,468.96 : 108,243.36 = 48,233.28 : x
  2. Step 2: Convert to fraction form
    78,468.96/108,243.36 = 48,233.28/x
  3. Step 3: Cross multiply
    78,468.96x = 108,243.36 × 48,233.28
  4. Step 4: Simplify right side
    78,468.96x = 5,220,932,291.02
  5. Step 5: Solve for x
    x = 5,220,932,291.02/78,468.96
  6. Step 6: Final answer
    x = 66,535.00

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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.