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Finding the Fourth Proportional to 85,703.60, 128,555.40 and 22,523.60

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Solution

The fourth proportional to 85,703.60, 128,555.40 and 22,523.60 is: 33,785.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,703.60 : 128,555.40 = 22,523.60 : x
  2. Step 2: Convert to fraction form
    85,703.60/128,555.40 = 22,523.60/x
  3. Step 3: Cross multiply
    85,703.60x = 128,555.40 × 22,523.60
  4. Step 4: Simplify right side
    85,703.60x = 2,895,530,407.44
  5. Step 5: Solve for x
    x = 2,895,530,407.44/85,703.60
  6. Step 6: Final answer
    x = 33,785.40

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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.