Home / 40,138.86-55,395.72-23,143.74

Finding the Fourth Proportional to 40,138.86, 55,395.72 and 23,143.74

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Solution

The fourth proportional to 40,138.86, 55,395.72 and 23,143.74 is: 31,940.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,138.86 : 55,395.72 = 23,143.74 : x
  2. Step 2: Convert to fraction form
    40,138.86/55,395.72 = 23,143.74/x
  3. Step 3: Cross multiply
    40,138.86x = 55,395.72 × 23,143.74
  4. Step 4: Simplify right side
    40,138.86x = 1,282,064,140.79
  5. Step 5: Solve for x
    x = 1,282,064,140.79/40,138.86
  6. Step 6: Final answer
    x = 31,940.72

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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.