Home / 57,012.92-78,685.26-31,867.64

Finding the Fourth Proportional to 57,012.92, 78,685.26 and 31,867.64

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Solution

The fourth proportional to 57,012.92, 78,685.26 and 31,867.64 is: 43,981.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,012.92 : 78,685.26 = 31,867.64 : x
  2. Step 2: Convert to fraction form
    57,012.92/78,685.26 = 31,867.64/x
  3. Step 3: Cross multiply
    57,012.92x = 78,685.26 × 31,867.64
  4. Step 4: Simplify right side
    57,012.92x = 2,507,513,538.99
  5. Step 5: Solve for x
    x = 2,507,513,538.99/57,012.92
  6. Step 6: Final answer
    x = 43,981.50

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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.