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Finding the Fourth Proportional to 85,551.60, 128,236.68 and 32,938.32

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Solution

The fourth proportional to 85,551.60, 128,236.68 and 32,938.32 is: 49,372.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,551.60 : 128,236.68 = 32,938.32 : x
  2. Step 2: Convert to fraction form
    85,551.60/128,236.68 = 32,938.32/x
  3. Step 3: Cross multiply
    85,551.60x = 128,236.68 × 32,938.32
  4. Step 4: Simplify right side
    85,551.60x = 4,223,900,801.58
  5. Step 5: Solve for x
    x = 4,223,900,801.58/85,551.60
  6. Step 6: Final answer
    x = 49,372.55

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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.