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Finding the Fourth Proportional to 85,601.90, 128,377.74 and 32,255.39

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Solution

The fourth proportional to 85,601.90, 128,377.74 and 32,255.39 is: 48,373.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,601.90 : 128,377.74 = 32,255.39 : x
  2. Step 2: Convert to fraction form
    85,601.90/128,377.74 = 32,255.39/x
  3. Step 3: Cross multiply
    85,601.90x = 128,377.74 × 32,255.39
  4. Step 4: Simplify right side
    85,601.90x = 4,140,874,071.02
  5. Step 5: Solve for x
    x = 4,140,874,071.02/85,601.90
  6. Step 6: Final answer
    x = 48,373.62

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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.