Home / 115,312.91-172,955.05-31,079.66

Finding the Fourth Proportional to 115,312.91, 172,955.05 and 31,079.66

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Solution

The fourth proportional to 115,312.91, 172,955.05 and 31,079.66 is: 46,615.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,312.91 : 172,955.05 = 31,079.66 : x
  2. Step 2: Convert to fraction form
    115,312.91/172,955.05 = 31,079.66/x
  3. Step 3: Cross multiply
    115,312.91x = 172,955.05 × 31,079.66
  4. Step 4: Simplify right side
    115,312.91x = 5,375,383,206.81
  5. Step 5: Solve for x
    x = 5,375,383,206.81/115,312.91
  6. Step 6: Final answer
    x = 46,615.63

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.