Home / 85,699.20-128,527.83-35,779.71

Finding the Fourth Proportional to 85,699.20, 128,527.83 and 35,779.71

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Solution

The fourth proportional to 85,699.20, 128,527.83 and 35,779.71 is: 53,660.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,699.20 : 128,527.83 = 35,779.71 : x
  2. Step 2: Convert to fraction form
    85,699.20/128,527.83 = 35,779.71/x
  3. Step 3: Cross multiply
    85,699.20x = 128,527.83 × 35,779.71
  4. Step 4: Simplify right side
    85,699.20x = 4,598,688,484.33
  5. Step 5: Solve for x
    x = 4,598,688,484.33/85,699.20
  6. Step 6: Final answer
    x = 53,660.81

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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.