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Finding the Fourth Proportional to 56,893.58, 78,513.13 and 31,743.08

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Solution

The fourth proportional to 56,893.58, 78,513.13 and 31,743.08 is: 43,805.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,893.58 : 78,513.13 = 31,743.08 : x
  2. Step 2: Convert to fraction form
    56,893.58/78,513.13 = 31,743.08/x
  3. Step 3: Cross multiply
    56,893.58x = 78,513.13 × 31,743.08
  4. Step 4: Simplify right side
    56,893.58x = 2,492,248,566.64
  5. Step 5: Solve for x
    x = 2,492,248,566.64/56,893.58
  6. Step 6: Final answer
    x = 43,805.44

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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.