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Finding the Fourth Proportional to 42,969.96, 64,378.67 and 17,954.87

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Solution

The fourth proportional to 42,969.96, 64,378.67 and 17,954.87 is: 26,900.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,969.96 : 64,378.67 = 17,954.87 : x
  2. Step 2: Convert to fraction form
    42,969.96/64,378.67 = 17,954.87/x
  3. Step 3: Cross multiply
    42,969.96x = 64,378.67 × 17,954.87
  4. Step 4: Simplify right side
    42,969.96x = 1,155,910,238.96
  5. Step 5: Solve for x
    x = 1,155,910,238.96/42,969.96
  6. Step 6: Final answer
    x = 26,900.43

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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.