Home / 31,539.40-47,309.10-30,003.40

Finding the Fourth Proportional to 31,539.40, 47,309.10 and 30,003.40

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Solution

The fourth proportional to 31,539.40, 47,309.10 and 30,003.40 is: 45,005.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,539.40 : 47,309.10 = 30,003.40 : x
  2. Step 2: Convert to fraction form
    31,539.40/47,309.10 = 30,003.40/x
  3. Step 3: Cross multiply
    31,539.40x = 47,309.10 × 30,003.40
  4. Step 4: Simplify right side
    31,539.40x = 1,419,433,850.94
  5. Step 5: Solve for x
    x = 1,419,433,850.94/31,539.40
  6. Step 6: Final answer
    x = 45,005.10

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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.