Home / 85,574.97-128,166.57-52,221.60

Finding the Fourth Proportional to 85,574.97, 128,166.57 and 52,221.60

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Solution

The fourth proportional to 85,574.97, 128,166.57 and 52,221.60 is: 78,212.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,574.97 : 128,166.57 = 52,221.60 : x
  2. Step 2: Convert to fraction form
    85,574.97/128,166.57 = 52,221.60/x
  3. Step 3: Cross multiply
    85,574.97x = 128,166.57 × 52,221.60
  4. Step 4: Simplify right side
    85,574.97x = 6,693,063,351.91
  5. Step 5: Solve for x
    x = 6,693,063,351.91/85,574.97
  6. Step 6: Final answer
    x = 78,212.86

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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.