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Finding the Fourth Proportional to 56,979.80, 78,642.99 and 37,564.64

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Solution

The fourth proportional to 56,979.80, 78,642.99 and 37,564.64 is: 51,846.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,979.80 : 78,642.99 = 37,564.64 : x
  2. Step 2: Convert to fraction form
    56,979.80/78,642.99 = 37,564.64/x
  3. Step 3: Cross multiply
    56,979.80x = 78,642.99 × 37,564.64
  4. Step 4: Simplify right side
    56,979.80x = 2,954,195,214.66
  5. Step 5: Solve for x
    x = 2,954,195,214.66/56,979.80
  6. Step 6: Final answer
    x = 51,846.36

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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.