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Finding the Fourth Proportional to 57,210.92, 85,756.80 and 19,232

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Solution

The fourth proportional to 57,210.92, 85,756.80 and 19,232 is: 28,827.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,210.92 : 85,756.80 = 19,232 : x
  2. Step 2: Convert to fraction form
    57,210.92/85,756.80 = 19,232/x
  3. Step 3: Cross multiply
    57,210.92x = 85,756.80 × 19,232
  4. Step 4: Simplify right side
    57,210.92x = 1,649,274,777.60
  5. Step 5: Solve for x
    x = 1,649,274,777.60/57,210.92
  6. Step 6: Final answer
    x = 28,827.97

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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.