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Finding the Fourth Proportional to 85,511.76, 117,993.60 and 48,718.32

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Solution

The fourth proportional to 85,511.76, 117,993.60 and 48,718.32 is: 67,224.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,511.76 : 117,993.60 = 48,718.32 : x
  2. Step 2: Convert to fraction form
    85,511.76/117,993.60 = 48,718.32/x
  3. Step 3: Cross multiply
    85,511.76x = 117,993.60 × 48,718.32
  4. Step 4: Simplify right side
    85,511.76x = 5,748,449,962.75
  5. Step 5: Solve for x
    x = 5,748,449,962.75/85,511.76
  6. Step 6: Final answer
    x = 67,224.09

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.