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Finding the Fourth Proportional to 93,131.26, 128,523.92 and 57,341.92

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Solution

The fourth proportional to 93,131.26, 128,523.92 and 57,341.92 is: 79,133.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,131.26 : 128,523.92 = 57,341.92 : x
  2. Step 2: Convert to fraction form
    93,131.26/128,523.92 = 57,341.92/x
  3. Step 3: Cross multiply
    93,131.26x = 128,523.92 × 57,341.92
  4. Step 4: Simplify right side
    93,131.26x = 7,369,807,409.40
  5. Step 5: Solve for x
    x = 7,369,807,409.40/93,131.26
  6. Step 6: Final answer
    x = 79,133.56

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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.