Home / 53,553.40-80,330.10-31,391.80

Finding the Fourth Proportional to 53,553.40, 80,330.10 and 31,391.80

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Solution

The fourth proportional to 53,553.40, 80,330.10 and 31,391.80 is: 47,087.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,553.40 : 80,330.10 = 31,391.80 : x
  2. Step 2: Convert to fraction form
    53,553.40/80,330.10 = 31,391.80/x
  3. Step 3: Cross multiply
    53,553.40x = 80,330.10 × 31,391.80
  4. Step 4: Simplify right side
    53,553.40x = 2,521,706,433.18
  5. Step 5: Solve for x
    x = 2,521,706,433.18/53,553.40
  6. Step 6: Final answer
    x = 47,087.70

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1.5x scale

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.