Home / 57,164.40-78,885.04-31,669.72

Finding the Fourth Proportional to 57,164.40, 78,885.04 and 31,669.72

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Solution

The fourth proportional to 57,164.40, 78,885.04 and 31,669.72 is: 43,703.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,164.40 : 78,885.04 = 31,669.72 : x
  2. Step 2: Convert to fraction form
    57,164.40/78,885.04 = 31,669.72/x
  3. Step 3: Cross multiply
    57,164.40x = 78,885.04 × 31,669.72
  4. Step 4: Simplify right side
    57,164.40x = 2,498,267,128.99
  5. Step 5: Solve for x
    x = 2,498,267,128.99/57,164.40
  6. Step 6: Final answer
    x = 43,703.20

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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.