Home / 78,839.89-118,091.70-63,782.40

Finding the Fourth Proportional to 78,839.89, 118,091.70 and 63,782.40

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Solution

The fourth proportional to 78,839.89, 118,091.70 and 63,782.40 is: 95,537.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,839.89 : 118,091.70 = 63,782.40 : x
  2. Step 2: Convert to fraction form
    78,839.89/118,091.70 = 63,782.40/x
  3. Step 3: Cross multiply
    78,839.89x = 118,091.70 × 63,782.40
  4. Step 4: Simplify right side
    78,839.89x = 7,532,172,046.08
  5. Step 5: Solve for x
    x = 7,532,172,046.08/78,839.89
  6. Step 6: Final answer
    x = 95,537.58

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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.