Home / 78,584.40-117,905.12-48,563.65

Finding the Fourth Proportional to 78,584.40, 117,905.12 and 48,563.65

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Solution

The fourth proportional to 78,584.40, 117,905.12 and 48,563.65 is: 72,863.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,584.40 : 117,905.12 = 48,563.65 : x
  2. Step 2: Convert to fraction form
    78,584.40/117,905.12 = 48,563.65/x
  3. Step 3: Cross multiply
    78,584.40x = 117,905.12 × 48,563.65
  4. Step 4: Simplify right side
    78,584.40x = 5,725,902,980.89
  5. Step 5: Solve for x
    x = 5,725,902,980.89/78,584.40
  6. Step 6: Final answer
    x = 72,863.10

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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.