Home / 78,783.03-118,153.08-26,185.68

Finding the Fourth Proportional to 78,783.03, 118,153.08 and 26,185.68

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Solution

The fourth proportional to 78,783.03, 118,153.08 and 26,185.68 is: 39,271.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,783.03 : 118,153.08 = 26,185.68 : x
  2. Step 2: Convert to fraction form
    78,783.03/118,153.08 = 26,185.68/x
  3. Step 3: Cross multiply
    78,783.03x = 118,153.08 × 26,185.68
  4. Step 4: Simplify right side
    78,783.03x = 3,093,918,743.89
  5. Step 5: Solve for x
    x = 3,093,918,743.89/78,783.03
  6. Step 6: Final answer
    x = 39,271.39

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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.