Home / 57,008.08-78,671.64-31,859.20

Finding the Fourth Proportional to 57,008.08, 78,671.64 and 31,859.20

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Solution

The fourth proportional to 57,008.08, 78,671.64 and 31,859.20 is: 43,965.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,008.08 : 78,671.64 = 31,859.20 : x
  2. Step 2: Convert to fraction form
    57,008.08/78,671.64 = 31,859.20/x
  3. Step 3: Cross multiply
    57,008.08x = 78,671.64 × 31,859.20
  4. Step 4: Simplify right side
    57,008.08x = 2,506,415,513.09
  5. Step 5: Solve for x
    x = 2,506,415,513.09/57,008.08
  6. Step 6: Final answer
    x = 43,965.97

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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.