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Finding the Fourth Proportional to 85,851.84, 128,758.08 and 23,527.20

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Solution

The fourth proportional to 85,851.84, 128,758.08 and 23,527.20 is: 35,285.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,851.84 : 128,758.08 = 23,527.20 : x
  2. Step 2: Convert to fraction form
    85,851.84/128,758.08 = 23,527.20/x
  3. Step 3: Cross multiply
    85,851.84x = 128,758.08 × 23,527.20
  4. Step 4: Simplify right side
    85,851.84x = 3,029,317,099.78
  5. Step 5: Solve for x
    x = 3,029,317,099.78/85,851.84
  6. Step 6: Final answer
    x = 35,285.41

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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.