Home / 78,947.60-108,912.16-48,734.16

Finding the Fourth Proportional to 78,947.60, 108,912.16 and 48,734.16

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Solution

The fourth proportional to 78,947.60, 108,912.16 and 48,734.16 is: 67,231.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,947.60 : 108,912.16 = 48,734.16 : x
  2. Step 2: Convert to fraction form
    78,947.60/108,912.16 = 48,734.16/x
  3. Step 3: Cross multiply
    78,947.60x = 108,912.16 × 48,734.16
  4. Step 4: Simplify right side
    78,947.60x = 5,307,742,631.39
  5. Step 5: Solve for x
    x = 5,307,742,631.39/78,947.60
  6. Step 6: Final answer
    x = 67,231.21

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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.