Home / 40,139.29-55,399.08-23,140.45

Finding the Fourth Proportional to 40,139.29, 55,399.08 and 23,140.45

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Solution

The fourth proportional to 40,139.29, 55,399.08 and 23,140.45 is: 31,937.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,139.29 : 55,399.08 = 23,140.45 : x
  2. Step 2: Convert to fraction form
    40,139.29/55,399.08 = 23,140.45/x
  3. Step 3: Cross multiply
    40,139.29x = 55,399.08 × 23,140.45
  4. Step 4: Simplify right side
    40,139.29x = 1,281,959,640.79
  5. Step 5: Solve for x
    x = 1,281,959,640.79/40,139.29
  6. Step 6: Final answer
    x = 31,937.78

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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.