Home / 85,944.70-128,886.20-29,769.72

Finding the Fourth Proportional to 85,944.70, 128,886.20 and 29,769.72

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Solution

The fourth proportional to 85,944.70, 128,886.20 and 29,769.72 is: 44,643.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,944.70 : 128,886.20 = 29,769.72 : x
  2. Step 2: Convert to fraction form
    85,944.70/128,886.20 = 29,769.72/x
  3. Step 3: Cross multiply
    85,944.70x = 128,886.20 × 29,769.72
  4. Step 4: Simplify right side
    85,944.70x = 3,836,906,085.86
  5. Step 5: Solve for x
    x = 3,836,906,085.86/85,944.70
  6. Step 6: Final answer
    x = 44,643.89

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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.