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Finding the Fourth Proportional to 51,643.50, 71,268.03 and 29,287.50

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Solution

The fourth proportional to 51,643.50, 71,268.03 and 29,287.50 is: 40,416.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,643.50 : 71,268.03 = 29,287.50 : x
  2. Step 2: Convert to fraction form
    51,643.50/71,268.03 = 29,287.50/x
  3. Step 3: Cross multiply
    51,643.50x = 71,268.03 × 29,287.50
  4. Step 4: Simplify right side
    51,643.50x = 2,087,262,428.63
  5. Step 5: Solve for x
    x = 2,087,262,428.63/51,643.50
  6. Step 6: Final answer
    x = 40,416.75

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1.5x scale

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.