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Finding the Fourth Proportional to 71,296.87, 98,284.90 and 54,271.46

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Solution

The fourth proportional to 71,296.87, 98,284.90 and 54,271.46 is: 74,814.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,296.87 : 98,284.90 = 54,271.46 : x
  2. Step 2: Convert to fraction form
    71,296.87/98,284.90 = 54,271.46/x
  3. Step 3: Cross multiply
    71,296.87x = 98,284.90 × 54,271.46
  4. Step 4: Simplify right side
    71,296.87x = 5,334,065,018.95
  5. Step 5: Solve for x
    x = 5,334,065,018.95/71,296.87
  6. Step 6: Final answer
    x = 74,814.86

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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.