Home / 85,540.96-128,303.18-26,360.74

Finding the Fourth Proportional to 85,540.96, 128,303.18 and 26,360.74

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Solution

The fourth proportional to 85,540.96, 128,303.18 and 26,360.74 is: 39,538.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,540.96 : 128,303.18 = 26,360.74 : x
  2. Step 2: Convert to fraction form
    85,540.96/128,303.18 = 26,360.74/x
  3. Step 3: Cross multiply
    85,540.96x = 128,303.18 × 26,360.74
  4. Step 4: Simplify right side
    85,540.96x = 3,382,166,769.15
  5. Step 5: Solve for x
    x = 3,382,166,769.15/85,540.96
  6. Step 6: Final answer
    x = 39,538.56

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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.