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Finding the Fourth Proportional to 92,842.36, 128,122.16 and 50,400.60

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Solution

The fourth proportional to 92,842.36, 128,122.16 and 50,400.60 is: 69,552.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,842.36 : 128,122.16 = 50,400.60 : x
  2. Step 2: Convert to fraction form
    92,842.36/128,122.16 = 50,400.60/x
  3. Step 3: Cross multiply
    92,842.36x = 128,122.16 × 50,400.60
  4. Step 4: Simplify right side
    92,842.36x = 6,457,433,737.30
  5. Step 5: Solve for x
    x = 6,457,433,737.30/92,842.36
  6. Step 6: Final answer
    x = 69,552.67

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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.