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Finding the Fourth Proportional to 85,497.73, 128,177.54 and 35,615.40

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Solution

The fourth proportional to 85,497.73, 128,177.54 and 35,615.40 is: 53,394.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,497.73 : 128,177.54 = 35,615.40 : x
  2. Step 2: Convert to fraction form
    85,497.73/128,177.54 = 35,615.40/x
  3. Step 3: Cross multiply
    85,497.73x = 128,177.54 × 35,615.40
  4. Step 4: Simplify right side
    85,497.73x = 4,565,093,832.93
  5. Step 5: Solve for x
    x = 4,565,093,832.93/85,497.73
  6. Step 6: Final answer
    x = 53,394.33

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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.