Home / 115,260.36-172,890.54-31,020.72

Finding the Fourth Proportional to 115,260.36, 172,890.54 and 31,020.72

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Solution

The fourth proportional to 115,260.36, 172,890.54 and 31,020.72 is: 46,531.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,260.36 : 172,890.54 = 31,020.72 : x
  2. Step 2: Convert to fraction form
    115,260.36/172,890.54 = 31,020.72/x
  3. Step 3: Cross multiply
    115,260.36x = 172,890.54 × 31,020.72
  4. Step 4: Simplify right side
    115,260.36x = 5,363,189,031.99
  5. Step 5: Solve for x
    x = 5,363,189,031.99/115,260.36
  6. Step 6: Final answer
    x = 46,531.08

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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.