Home / 115,041.36-172,612.25-40,215.18

Finding the Fourth Proportional to 115,041.36, 172,612.25 and 40,215.18

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Solution

The fourth proportional to 115,041.36, 172,612.25 and 40,215.18 is: 60,340.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,041.36 : 172,612.25 = 40,215.18 : x
  2. Step 2: Convert to fraction form
    115,041.36/172,612.25 = 40,215.18/x
  3. Step 3: Cross multiply
    115,041.36x = 172,612.25 × 40,215.18
  4. Step 4: Simplify right side
    115,041.36x = 6,941,633,300.98
  5. Step 5: Solve for x
    x = 6,941,633,300.98/115,041.36
  6. Step 6: Final answer
    x = 60,340.33

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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.