Home / 78,786.03-118,157.58-26,188.68

Finding the Fourth Proportional to 78,786.03, 118,157.58 and 26,188.68

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Solution

The fourth proportional to 78,786.03, 118,157.58 and 26,188.68 is: 39,275.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,786.03 : 118,157.58 = 26,188.68 : x
  2. Step 2: Convert to fraction form
    78,786.03/118,157.58 = 26,188.68/x
  3. Step 3: Cross multiply
    78,786.03x = 118,157.58 × 26,188.68
  4. Step 4: Simplify right side
    78,786.03x = 3,094,391,052.19
  5. Step 5: Solve for x
    x = 3,094,391,052.19/78,786.03
  6. Step 6: Final answer
    x = 39,275.88

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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.