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Finding the Fourth Proportional to 56,715, 85,075.98 and 17,275.08

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Solution

The fourth proportional to 56,715, 85,075.98 and 17,275.08 is: 25,913.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,715 : 85,075.98 = 17,275.08 : x
  2. Step 2: Convert to fraction form
    56,715/85,075.98 = 17,275.08/x
  3. Step 3: Cross multiply
    56,715x = 85,075.98 × 17,275.08
  4. Step 4: Simplify right side
    56,715x = 1,469,694,360.58
  5. Step 5: Solve for x
    x = 1,469,694,360.58/56,715
  6. Step 6: Final answer
    x = 25,913.68

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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.