Home / 48,490.74-72,736.20-13,430.49

Finding the Fourth Proportional to 48,490.74, 72,736.20 and 13,430.49

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Solution

The fourth proportional to 48,490.74, 72,736.20 and 13,430.49 is: 20,145.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,490.74 : 72,736.20 = 13,430.49 : x
  2. Step 2: Convert to fraction form
    48,490.74/72,736.20 = 13,430.49/x
  3. Step 3: Cross multiply
    48,490.74x = 72,736.20 × 13,430.49
  4. Step 4: Simplify right side
    48,490.74x = 976,882,806.74
  5. Step 5: Solve for x
    x = 976,882,806.74/48,490.74
  6. Step 6: Final answer
    x = 20,145.76

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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.