Home / 55,299.68-76,315.60-31,430.40

Finding the Fourth Proportional to 55,299.68, 76,315.60 and 31,430.40

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Solution

The fourth proportional to 55,299.68, 76,315.60 and 31,430.40 is: 43,375.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,299.68 : 76,315.60 = 31,430.40 : x
  2. Step 2: Convert to fraction form
    55,299.68/76,315.60 = 31,430.40/x
  3. Step 3: Cross multiply
    55,299.68x = 76,315.60 × 31,430.40
  4. Step 4: Simplify right side
    55,299.68x = 2,398,629,834.24
  5. Step 5: Solve for x
    x = 2,398,629,834.24/55,299.68
  6. Step 6: Final answer
    x = 43,375.11

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.