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Finding the Fourth Proportional to 85,652.37, 128,490.89 and 26,492.64

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Solution

The fourth proportional to 85,652.37, 128,490.89 and 26,492.64 is: 39,742.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,652.37 : 128,490.89 = 26,492.64 : x
  2. Step 2: Convert to fraction form
    85,652.37/128,490.89 = 26,492.64/x
  3. Step 3: Cross multiply
    85,652.37x = 128,490.89 × 26,492.64
  4. Step 4: Simplify right side
    85,652.37x = 3,404,062,759.59
  5. Step 5: Solve for x
    x = 3,404,062,759.59/85,652.37
  6. Step 6: Final answer
    x = 39,742.77

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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.