Home / 85,089.75-127,619.58-31,769.76

Finding the Fourth Proportional to 85,089.75, 127,619.58 and 31,769.76

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Solution

The fourth proportional to 85,089.75, 127,619.58 and 31,769.76 is: 47,649.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,089.75 : 127,619.58 = 31,769.76 : x
  2. Step 2: Convert to fraction form
    85,089.75/127,619.58 = 31,769.76/x
  3. Step 3: Cross multiply
    85,089.75x = 127,619.58 × 31,769.76
  4. Step 4: Simplify right side
    85,089.75x = 4,054,443,427.90
  5. Step 5: Solve for x
    x = 4,054,443,427.90/85,089.75
  6. Step 6: Final answer
    x = 47,649.02

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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.