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Finding the Fourth Proportional to 85,493.84, 128,240.75 and 23,164.34

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Solution

The fourth proportional to 85,493.84, 128,240.75 and 23,164.34 is: 34,746.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,493.84 : 128,240.75 = 23,164.34 : x
  2. Step 2: Convert to fraction form
    85,493.84/128,240.75 = 23,164.34/x
  3. Step 3: Cross multiply
    85,493.84x = 128,240.75 × 23,164.34
  4. Step 4: Simplify right side
    85,493.84x = 2,970,611,751.56
  5. Step 5: Solve for x
    x = 2,970,611,751.56/85,493.84
  6. Step 6: Final answer
    x = 34,746.50

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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.