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Finding the Fourth Proportional to 56,393.92, 77,815.20 and 34,905.28

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Solution

The fourth proportional to 56,393.92, 77,815.20 and 34,905.28 is: 48,164.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,393.92 : 77,815.20 = 34,905.28 : x
  2. Step 2: Convert to fraction form
    56,393.92/77,815.20 = 34,905.28/x
  3. Step 3: Cross multiply
    56,393.92x = 77,815.20 × 34,905.28
  4. Step 4: Simplify right side
    56,393.92x = 2,716,161,344.26
  5. Step 5: Solve for x
    x = 2,716,161,344.26/56,393.92
  6. Step 6: Final answer
    x = 48,164.08

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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.