Home / 55,612.88-83,431.63-30,640.07

Finding the Fourth Proportional to 55,612.88, 83,431.63 and 30,640.07

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Solution

The fourth proportional to 55,612.88, 83,431.63 and 30,640.07 is: 45,966.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,612.88 : 83,431.63 = 30,640.07 : x
  2. Step 2: Convert to fraction form
    55,612.88/83,431.63 = 30,640.07/x
  3. Step 3: Cross multiply
    55,612.88x = 83,431.63 × 30,640.07
  4. Step 4: Simplify right side
    55,612.88x = 2,556,350,830.21
  5. Step 5: Solve for x
    x = 2,556,350,830.21/55,612.88
  6. Step 6: Final answer
    x = 45,966.88

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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.