Home / 85,671.27-128,432.93-33,117.66

Finding the Fourth Proportional to 85,671.27, 128,432.93 and 33,117.66

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Solution

The fourth proportional to 85,671.27, 128,432.93 and 33,117.66 is: 49,647.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,671.27 : 128,432.93 = 33,117.66 : x
  2. Step 2: Convert to fraction form
    85,671.27/128,432.93 = 33,117.66/x
  3. Step 3: Cross multiply
    85,671.27x = 128,432.93 × 33,117.66
  4. Step 4: Simplify right side
    85,671.27x = 4,253,397,942.96
  5. Step 5: Solve for x
    x = 4,253,397,942.96/85,671.27
  6. Step 6: Final answer
    x = 49,647.89

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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.