Home / 78,255.60-117,425.16-51,972.72

Finding the Fourth Proportional to 78,255.60, 117,425.16 and 51,972.72

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Solution

The fourth proportional to 78,255.60, 117,425.16 and 51,972.72 is: 77,986.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,255.60 : 117,425.16 = 51,972.72 : x
  2. Step 2: Convert to fraction form
    78,255.60/117,425.16 = 51,972.72/x
  3. Step 3: Cross multiply
    78,255.60x = 117,425.16 × 51,972.72
  4. Step 4: Simplify right side
    78,255.60x = 6,102,904,961.64
  5. Step 5: Solve for x
    x = 6,102,904,961.64/78,255.60
  6. Step 6: Final answer
    x = 77,986.81

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1.5x scale

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.