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Finding the Fourth Proportional to 92,981.57, 128,315.01 and 50,540.07

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Solution

The fourth proportional to 92,981.57, 128,315.01 and 50,540.07 is: 69,745.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,981.57 : 128,315.01 = 50,540.07 : x
  2. Step 2: Convert to fraction form
    92,981.57/128,315.01 = 50,540.07/x
  3. Step 3: Cross multiply
    92,981.57x = 128,315.01 × 50,540.07
  4. Step 4: Simplify right side
    92,981.57x = 6,485,049,587.45
  5. Step 5: Solve for x
    x = 6,485,049,587.45/92,981.57
  6. Step 6: Final answer
    x = 69,745.54

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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.