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Finding the Fourth Proportional to 78,354.48, 108,102.48 and 50,076.48

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Solution

The fourth proportional to 78,354.48, 108,102.48 and 50,076.48 is: 69,088.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,354.48 : 108,102.48 = 50,076.48 : x
  2. Step 2: Convert to fraction form
    78,354.48/108,102.48 = 50,076.48/x
  3. Step 3: Cross multiply
    78,354.48x = 108,102.48 × 50,076.48
  4. Step 4: Simplify right side
    78,354.48x = 5,413,391,677.67
  5. Step 5: Solve for x
    x = 5,413,391,677.67/78,354.48
  6. Step 6: Final answer
    x = 69,088.48

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1.5x scale

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.