Home / 85,845.47-128,786.66-28,925.03

Finding the Fourth Proportional to 85,845.47, 128,786.66 and 28,925.03

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Solution

The fourth proportional to 85,845.47, 128,786.66 and 28,925.03 is: 43,393.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,845.47 : 128,786.66 = 28,925.03 : x
  2. Step 2: Convert to fraction form
    85,845.47/128,786.66 = 28,925.03/x
  3. Step 3: Cross multiply
    85,845.47x = 128,786.66 × 28,925.03
  4. Step 4: Simplify right side
    85,845.47x = 3,725,157,698.49
  5. Step 5: Solve for x
    x = 3,725,157,698.49/85,845.47
  6. Step 6: Final answer
    x = 43,393.76

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.