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Finding the Fourth Proportional to 71,268.60, 106,883.70 and 21,348.60

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Solution

The fourth proportional to 71,268.60, 106,883.70 and 21,348.60 is: 32,017.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,268.60 : 106,883.70 = 21,348.60 : x
  2. Step 2: Convert to fraction form
    71,268.60/106,883.70 = 21,348.60/x
  3. Step 3: Cross multiply
    71,268.60x = 106,883.70 × 21,348.60
  4. Step 4: Simplify right side
    71,268.60x = 2,281,817,357.82
  5. Step 5: Solve for x
    x = 2,281,817,357.82/71,268.60
  6. Step 6: Final answer
    x = 32,017.15

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1.5x scale

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.