Home / 40,128.08-55,361.88-25,988.72

Finding the Fourth Proportional to 40,128.08, 55,361.88 and 25,988.72

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Solution

The fourth proportional to 40,128.08, 55,361.88 and 25,988.72 is: 35,854.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,128.08 : 55,361.88 = 25,988.72 : x
  2. Step 2: Convert to fraction form
    40,128.08/55,361.88 = 25,988.72/x
  3. Step 3: Cross multiply
    40,128.08x = 55,361.88 × 25,988.72
  4. Step 4: Simplify right side
    40,128.08x = 1,438,784,397.99
  5. Step 5: Solve for x
    x = 1,438,784,397.99/40,128.08
  6. Step 6: Final answer
    x = 35,854.80

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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.