Home / 78,370.45-108,184.31-52,911.28

Finding the Fourth Proportional to 78,370.45, 108,184.31 and 52,911.28

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Solution

The fourth proportional to 78,370.45, 108,184.31 and 52,911.28 is: 73,039.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,370.45 : 108,184.31 = 52,911.28 : x
  2. Step 2: Convert to fraction form
    78,370.45/108,184.31 = 52,911.28/x
  3. Step 3: Cross multiply
    78,370.45x = 108,184.31 × 52,911.28
  4. Step 4: Simplify right side
    78,370.45x = 5,724,170,318.02
  5. Step 5: Solve for x
    x = 5,724,170,318.02/78,370.45
  6. Step 6: Final answer
    x = 73,039.91

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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.