Home / 40,128.44-55,319.54-28,154.66

Finding the Fourth Proportional to 40,128.44, 55,319.54 and 28,154.66

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Solution

The fourth proportional to 40,128.44, 55,319.54 and 28,154.66 is: 38,812.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,128.44 : 55,319.54 = 28,154.66 : x
  2. Step 2: Convert to fraction form
    40,128.44/55,319.54 = 28,154.66/x
  3. Step 3: Cross multiply
    40,128.44x = 55,319.54 × 28,154.66
  4. Step 4: Simplify right side
    40,128.44x = 1,557,502,840.06
  5. Step 5: Solve for x
    x = 1,557,502,840.06/40,128.44
  6. Step 6: Final answer
    x = 38,812.94

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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.