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Finding the Fourth Proportional to 56,491.36, 77,957.04 and 31,340.32

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Solution

The fourth proportional to 56,491.36, 77,957.04 and 31,340.32 is: 43,249.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,491.36 : 77,957.04 = 31,340.32 : x
  2. Step 2: Convert to fraction form
    56,491.36/77,957.04 = 31,340.32/x
  3. Step 3: Cross multiply
    56,491.36x = 77,957.04 × 31,340.32
  4. Step 4: Simplify right side
    56,491.36x = 2,443,198,579.85
  5. Step 5: Solve for x
    x = 2,443,198,579.85/56,491.36
  6. Step 6: Final answer
    x = 43,249.07

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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.