Home / 78,821.28-118,236.96-55,056.96

Finding the Fourth Proportional to 78,821.28, 118,236.96 and 55,056.96

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Solution

The fourth proportional to 78,821.28, 118,236.96 and 55,056.96 is: 82,588.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,821.28 : 118,236.96 = 55,056.96 : x
  2. Step 2: Convert to fraction form
    78,821.28/118,236.96 = 55,056.96/x
  3. Step 3: Cross multiply
    78,821.28x = 118,236.96 × 55,056.96
  4. Step 4: Simplify right side
    78,821.28x = 6,509,767,577.24
  5. Step 5: Solve for x
    x = 6,509,767,577.24/78,821.28
  6. Step 6: Final answer
    x = 82,588.96

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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.