Home / 85,742.17-128,632.05-28,814.03

Finding the Fourth Proportional to 85,742.17, 128,632.05 and 28,814.03

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Solution

The fourth proportional to 85,742.17, 128,632.05 and 28,814.03 is: 43,227.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,742.17 : 128,632.05 = 28,814.03 : x
  2. Step 2: Convert to fraction form
    85,742.17/128,632.05 = 28,814.03/x
  3. Step 3: Cross multiply
    85,742.17x = 128,632.05 × 28,814.03
  4. Step 4: Simplify right side
    85,742.17x = 3,706,407,586.87
  5. Step 5: Solve for x
    x = 3,706,407,586.87/85,742.17
  6. Step 6: Final answer
    x = 43,227.36

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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.