Home / 57,154.25-78,870.43-31,660.51

Finding the Fourth Proportional to 57,154.25, 78,870.43 and 31,660.51

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Solution

The fourth proportional to 57,154.25, 78,870.43 and 31,660.51 is: 43,690.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,154.25 : 78,870.43 = 31,660.51 : x
  2. Step 2: Convert to fraction form
    57,154.25/78,870.43 = 31,660.51/x
  3. Step 3: Cross multiply
    57,154.25x = 78,870.43 × 31,660.51
  4. Step 4: Simplify right side
    57,154.25x = 2,497,078,037.72
  5. Step 5: Solve for x
    x = 2,497,078,037.72/57,154.25
  6. Step 6: Final answer
    x = 43,690.15

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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.