Home / 85,315.23-127,918.16-35,429.76

Finding the Fourth Proportional to 85,315.23, 127,918.16 and 35,429.76

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Solution

The fourth proportional to 85,315.23, 127,918.16 and 35,429.76 is: 53,121.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,315.23 : 127,918.16 = 35,429.76 : x
  2. Step 2: Convert to fraction form
    85,315.23/127,918.16 = 35,429.76/x
  3. Step 3: Cross multiply
    85,315.23x = 127,918.16 × 35,429.76
  4. Step 4: Simplify right side
    85,315.23x = 4,532,109,531.29
  5. Step 5: Solve for x
    x = 4,532,109,531.29/85,315.23
  6. Step 6: Final answer
    x = 53,121.93

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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.