Home / 85,364.40-128,046.60-57,297.90

Finding the Fourth Proportional to 85,364.40, 128,046.60 and 57,297.90

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Solution

The fourth proportional to 85,364.40, 128,046.60 and 57,297.90 is: 85,946.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,364.40 : 128,046.60 = 57,297.90 : x
  2. Step 2: Convert to fraction form
    85,364.40/128,046.60 = 57,297.90/x
  3. Step 3: Cross multiply
    85,364.40x = 128,046.60 × 57,297.90
  4. Step 4: Simplify right side
    85,364.40x = 7,336,801,282.14
  5. Step 5: Solve for x
    x = 7,336,801,282.14/85,364.40
  6. Step 6: Final answer
    x = 85,946.85

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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.