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Finding the Fourth Proportional to 75,969.64, 104,690.10 and 54,708.76

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Solution

The fourth proportional to 75,969.64, 104,690.10 and 54,708.76 is: 75,391.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,969.64 : 104,690.10 = 54,708.76 : x
  2. Step 2: Convert to fraction form
    75,969.64/104,690.10 = 54,708.76/x
  3. Step 3: Cross multiply
    75,969.64x = 104,690.10 × 54,708.76
  4. Step 4: Simplify right side
    75,969.64x = 5,727,465,555.28
  5. Step 5: Solve for x
    x = 5,727,465,555.28/75,969.64
  6. Step 6: Final answer
    x = 75,391.51

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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.