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Finding the Fourth Proportional to 85,327.88, 127,820.46 and 42,504.32

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Solution

The fourth proportional to 85,327.88, 127,820.46 and 42,504.32 is: 63,671.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,327.88 : 127,820.46 = 42,504.32 : x
  2. Step 2: Convert to fraction form
    85,327.88/127,820.46 = 42,504.32/x
  3. Step 3: Cross multiply
    85,327.88x = 127,820.46 × 42,504.32
  4. Step 4: Simplify right side
    85,327.88x = 5,432,921,734.39
  5. Step 5: Solve for x
    x = 5,432,921,734.39/85,327.88
  6. Step 6: Final answer
    x = 63,671.12

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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.