Home / 40,130.64-55,379.92-23,128.64

Finding the Fourth Proportional to 40,130.64, 55,379.92 and 23,128.64

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Solution

The fourth proportional to 40,130.64, 55,379.92 and 23,128.64 is: 31,917.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,130.64 : 55,379.92 = 23,128.64 : x
  2. Step 2: Convert to fraction form
    40,130.64/55,379.92 = 23,128.64/x
  3. Step 3: Cross multiply
    40,130.64x = 55,379.92 × 23,128.64
  4. Step 4: Simplify right side
    40,130.64x = 1,280,862,232.91
  5. Step 5: Solve for x
    x = 1,280,862,232.91/40,130.64
  6. Step 6: Final answer
    x = 31,917.31

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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.