Home / 115,075.13-172,614.85-31,971.29

Finding the Fourth Proportional to 115,075.13, 172,614.85 and 31,971.29

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Solution

The fourth proportional to 115,075.13, 172,614.85 and 31,971.29 is: 47,957.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,075.13 : 172,614.85 = 31,971.29 : x
  2. Step 2: Convert to fraction form
    115,075.13/172,614.85 = 31,971.29/x
  3. Step 3: Cross multiply
    115,075.13x = 172,614.85 × 31,971.29
  4. Step 4: Simplify right side
    115,075.13x = 5,518,718,484.65
  5. Step 5: Solve for x
    x = 5,518,718,484.65/115,075.13
  6. Step 6: Final answer
    x = 47,957.53

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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.