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Finding the Fourth Proportional to 90,955.56, 124,609.70 and 87,546.56

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Solution

The fourth proportional to 90,955.56, 124,609.70 and 87,546.56 is: 119,939.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,955.56 : 124,609.70 = 87,546.56 : x
  2. Step 2: Convert to fraction form
    90,955.56/124,609.70 = 87,546.56/x
  3. Step 3: Cross multiply
    90,955.56x = 124,609.70 × 87,546.56
  4. Step 4: Simplify right side
    90,955.56x = 10,909,150,577.63
  5. Step 5: Solve for x
    x = 10,909,150,577.63/90,955.56
  6. Step 6: Final answer
    x = 119,939.35

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.