Home / 115,075.75-172,615.79-31,971.91

Finding the Fourth Proportional to 115,075.75, 172,615.79 and 31,971.91

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Solution

The fourth proportional to 115,075.75, 172,615.79 and 31,971.91 is: 47,958.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,075.75 : 172,615.79 = 31,971.91 : x
  2. Step 2: Convert to fraction form
    115,075.75/172,615.79 = 31,971.91/x
  3. Step 3: Cross multiply
    115,075.75x = 172,615.79 × 31,971.91
  4. Step 4: Simplify right side
    115,075.75x = 5,518,856,502.46
  5. Step 5: Solve for x
    x = 5,518,856,502.46/115,075.75
  6. Step 6: Final answer
    x = 47,958.47

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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.