Home / 31,622.40-47,433.60-30,412.80

Finding the Fourth Proportional to 31,622.40, 47,433.60 and 30,412.80

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Solution

The fourth proportional to 31,622.40, 47,433.60 and 30,412.80 is: 45,619.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,622.40 : 47,433.60 = 30,412.80 : x
  2. Step 2: Convert to fraction form
    31,622.40/47,433.60 = 30,412.80/x
  3. Step 3: Cross multiply
    31,622.40x = 47,433.60 × 30,412.80
  4. Step 4: Simplify right side
    31,622.40x = 1,442,588,590.08
  5. Step 5: Solve for x
    x = 1,442,588,590.08/31,622.40
  6. Step 6: Final answer
    x = 45,619.20

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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.