Home / 55,302.16-76,308.11-31,103.05

Finding the Fourth Proportional to 55,302.16, 76,308.11 and 31,103.05

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Solution

The fourth proportional to 55,302.16, 76,308.11 and 31,103.05 is: 42,917.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,302.16 : 76,308.11 = 31,103.05 : x
  2. Step 2: Convert to fraction form
    55,302.16/76,308.11 = 31,103.05/x
  3. Step 3: Cross multiply
    55,302.16x = 76,308.11 × 31,103.05
  4. Step 4: Simplify right side
    55,302.16x = 2,373,414,960.74
  5. Step 5: Solve for x
    x = 2,373,414,960.74/55,302.16
  6. Step 6: Final answer
    x = 42,917.22

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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.