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Finding the Fourth Proportional to 56,751.30, 85,127.40 and 17,308.80

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Solution

The fourth proportional to 56,751.30, 85,127.40 and 17,308.80 is: 25,963.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,751.30 : 85,127.40 = 17,308.80 : x
  2. Step 2: Convert to fraction form
    56,751.30/85,127.40 = 17,308.80/x
  3. Step 3: Cross multiply
    56,751.30x = 85,127.40 × 17,308.80
  4. Step 4: Simplify right side
    56,751.30x = 1,473,453,141.12
  5. Step 5: Solve for x
    x = 1,473,453,141.12/56,751.30
  6. Step 6: Final answer
    x = 25,963.34

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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.