Home / 55,299.85-76,310.51-31,423.21

Finding the Fourth Proportional to 55,299.85, 76,310.51 and 31,423.21

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Solution

The fourth proportional to 55,299.85, 76,310.51 and 31,423.21 is: 43,362.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,299.85 : 76,310.51 = 31,423.21 : x
  2. Step 2: Convert to fraction form
    55,299.85/76,310.51 = 31,423.21/x
  3. Step 3: Cross multiply
    55,299.85x = 76,310.51 × 31,423.21
  4. Step 4: Simplify right side
    55,299.85x = 2,397,921,023.82
  5. Step 5: Solve for x
    x = 2,397,921,023.82/55,299.85
  6. Step 6: Final answer
    x = 43,362.16

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1.5x scale

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.