Home / 85,944.58-128,923.35-55,890.34

Finding the Fourth Proportional to 85,944.58, 128,923.35 and 55,890.34

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Solution

The fourth proportional to 85,944.58, 128,923.35 and 55,890.34 is: 83,839.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,944.58 : 128,923.35 = 55,890.34 : x
  2. Step 2: Convert to fraction form
    85,944.58/128,923.35 = 55,890.34/x
  3. Step 3: Cross multiply
    85,944.58x = 128,923.35 × 55,890.34
  4. Step 4: Simplify right side
    85,944.58x = 7,205,569,865.44
  5. Step 5: Solve for x
    x = 7,205,569,865.44/85,944.58
  6. Step 6: Final answer
    x = 83,839.72

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Double scale
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Similar ratio
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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.