Home / 78,720.84-118,042.38-34,328.34

Finding the Fourth Proportional to 78,720.84, 118,042.38 and 34,328.34

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Solution

The fourth proportional to 78,720.84, 118,042.38 and 34,328.34 is: 51,475.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,720.84 : 118,042.38 = 34,328.34 : x
  2. Step 2: Convert to fraction form
    78,720.84/118,042.38 = 34,328.34/x
  3. Step 3: Cross multiply
    78,720.84x = 118,042.38 × 34,328.34
  4. Step 4: Simplify right side
    78,720.84x = 4,052,198,955.05
  5. Step 5: Solve for x
    x = 4,052,198,955.05/78,720.84
  6. Step 6: Final answer
    x = 51,475.56

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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.