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Finding the Fourth Proportional to 85,480.67, 128,222.66 and 26,316.29

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Solution

The fourth proportional to 85,480.67, 128,222.66 and 26,316.29 is: 39,474.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,480.67 : 128,222.66 = 26,316.29 : x
  2. Step 2: Convert to fraction form
    85,480.67/128,222.66 = 26,316.29/x
  3. Step 3: Cross multiply
    85,480.67x = 128,222.66 × 26,316.29
  4. Step 4: Simplify right side
    85,480.67x = 3,374,345,091.48
  5. Step 5: Solve for x
    x = 3,374,345,091.48/85,480.67
  6. Step 6: Final answer
    x = 39,474.95

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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.