Home / 40,125.66-55,370.38-21,972.40

Finding the Fourth Proportional to 40,125.66, 55,370.38 and 21,972.40

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Solution

The fourth proportional to 40,125.66, 55,370.38 and 21,972.40 is: 30,320.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,125.66 : 55,370.38 = 21,972.40 : x
  2. Step 2: Convert to fraction form
    40,125.66/55,370.38 = 21,972.40/x
  3. Step 3: Cross multiply
    40,125.66x = 55,370.38 × 21,972.40
  4. Step 4: Simplify right side
    40,125.66x = 1,216,620,137.51
  5. Step 5: Solve for x
    x = 1,216,620,137.51/40,125.66
  6. Step 6: Final answer
    x = 30,320.25

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.