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Finding the Fourth Proportional to 85,674.60, 128,479.94 and 29,498.84

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Solution

The fourth proportional to 85,674.60, 128,479.94 and 29,498.84 is: 44,237.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,674.60 : 128,479.94 = 29,498.84 : x
  2. Step 2: Convert to fraction form
    85,674.60/128,479.94 = 29,498.84/x
  3. Step 3: Cross multiply
    85,674.60x = 128,479.94 × 29,498.84
  4. Step 4: Simplify right side
    85,674.60x = 3,790,009,193.27
  5. Step 5: Solve for x
    x = 3,790,009,193.27/85,674.60
  6. Step 6: Final answer
    x = 44,237.26

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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.