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Finding the Fourth Proportional to 86,126.88, 128,958.56 and 48,630.72

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Solution

The fourth proportional to 86,126.88, 128,958.56 and 48,630.72 is: 72,815.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,126.88 : 128,958.56 = 48,630.72 : x
  2. Step 2: Convert to fraction form
    86,126.88/128,958.56 = 48,630.72/x
  3. Step 3: Cross multiply
    86,126.88x = 128,958.56 × 48,630.72
  4. Step 4: Simplify right side
    86,126.88x = 6,271,347,622.96
  5. Step 5: Solve for x
    x = 6,271,347,622.96/86,126.88
  6. Step 6: Final answer
    x = 72,815.22

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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.