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Finding the Fourth Proportional to 92,939.52, 139,448.16 and 40,393.20

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Solution

The fourth proportional to 92,939.52, 139,448.16 and 40,393.20 is: 60,606.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,939.52 : 139,448.16 = 40,393.20 : x
  2. Step 2: Convert to fraction form
    92,939.52/139,448.16 = 40,393.20/x
  3. Step 3: Cross multiply
    92,939.52x = 139,448.16 × 40,393.20
  4. Step 4: Simplify right side
    92,939.52x = 5,632,757,416.51
  5. Step 5: Solve for x
    x = 5,632,757,416.51/92,939.52
  6. Step 6: Final answer
    x = 60,606.70

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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.