Home / 55,479.12-76,561.64-31,605.40

Finding the Fourth Proportional to 55,479.12, 76,561.64 and 31,605.40

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Solution

The fourth proportional to 55,479.12, 76,561.64 and 31,605.40 is: 43,615.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,479.12 : 76,561.64 = 31,605.40 : x
  2. Step 2: Convert to fraction form
    55,479.12/76,561.64 = 31,605.40/x
  3. Step 3: Cross multiply
    55,479.12x = 76,561.64 × 31,605.40
  4. Step 4: Simplify right side
    55,479.12x = 2,419,761,256.86
  5. Step 5: Solve for x
    x = 2,419,761,256.86/55,479.12
  6. Step 6: Final answer
    x = 43,615.71

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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.