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Finding the Fourth Proportional to 85,588.84, 128,357.34 and 23,251.24

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Solution

The fourth proportional to 85,588.84, 128,357.34 and 23,251.24 is: 34,869.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,588.84 : 128,357.34 = 23,251.24 : x
  2. Step 2: Convert to fraction form
    85,588.84/128,357.34 = 23,251.24/x
  3. Step 3: Cross multiply
    85,588.84x = 128,357.34 × 23,251.24
  4. Step 4: Simplify right side
    85,588.84x = 2,984,467,318.10
  5. Step 5: Solve for x
    x = 2,984,467,318.10/85,588.84
  6. Step 6: Final answer
    x = 34,869.82

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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.