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Finding the Fourth Proportional to 86,274.72, 129,392.64 and 33,657.12

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Solution

The fourth proportional to 86,274.72, 129,392.64 and 33,657.12 is: 50,478.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,274.72 : 129,392.64 = 33,657.12 : x
  2. Step 2: Convert to fraction form
    86,274.72/129,392.64 = 33,657.12/x
  3. Step 3: Cross multiply
    86,274.72x = 129,392.64 × 33,657.12
  4. Step 4: Simplify right side
    86,274.72x = 4,354,983,611.60
  5. Step 5: Solve for x
    x = 4,354,983,611.60/86,274.72
  6. Step 6: Final answer
    x = 50,478.10

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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.