Home / 81,783.18-122,677.20-35,005.68

Finding the Fourth Proportional to 81,783.18, 122,677.20 and 35,005.68

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Solution

The fourth proportional to 81,783.18, 122,677.20 and 35,005.68 is: 52,509.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,783.18 : 122,677.20 = 35,005.68 : x
  2. Step 2: Convert to fraction form
    81,783.18/122,677.20 = 35,005.68/x
  3. Step 3: Cross multiply
    81,783.18x = 122,677.20 × 35,005.68
  4. Step 4: Simplify right side
    81,783.18x = 4,294,398,806.50
  5. Step 5: Solve for x
    x = 4,294,398,806.50/81,783.18
  6. Step 6: Final answer
    x = 52,509.56

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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.