Home / 31,815.03-47,648.70-30,707.90

Finding the Fourth Proportional to 31,815.03, 47,648.70 and 30,707.90

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Solution

The fourth proportional to 31,815.03, 47,648.70 and 30,707.90 is: 45,990.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,815.03 : 47,648.70 = 30,707.90 : x
  2. Step 2: Convert to fraction form
    31,815.03/47,648.70 = 30,707.90/x
  3. Step 3: Cross multiply
    31,815.03x = 47,648.70 × 30,707.90
  4. Step 4: Simplify right side
    31,815.03x = 1,463,191,276.49
  5. Step 5: Solve for x
    x = 1,463,191,276.49/31,815.03
  6. Step 6: Final answer
    x = 45,990.57

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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.