Home / 40,124.66-55,369.01-21,971.40

Finding the Fourth Proportional to 40,124.66, 55,369.01 and 21,971.40

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Solution

The fourth proportional to 40,124.66, 55,369.01 and 21,971.40 is: 30,318.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,124.66 : 55,369.01 = 21,971.40 : x
  2. Step 2: Convert to fraction form
    40,124.66/55,369.01 = 21,971.40/x
  3. Step 3: Cross multiply
    40,124.66x = 55,369.01 × 21,971.40
  4. Step 4: Simplify right side
    40,124.66x = 1,216,534,556.46
  5. Step 5: Solve for x
    x = 1,216,534,556.46/40,124.66
  6. Step 6: Final answer
    x = 30,318.88

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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.