Home / 31,690.16-47,584.40-30,287.80

Finding the Fourth Proportional to 31,690.16, 47,584.40 and 30,287.80

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Solution

The fourth proportional to 31,690.16, 47,584.40 and 30,287.80 is: 45,478.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,690.16 : 47,584.40 = 30,287.80 : x
  2. Step 2: Convert to fraction form
    31,690.16/47,584.40 = 30,287.80/x
  3. Step 3: Cross multiply
    31,690.16x = 47,584.40 × 30,287.80
  4. Step 4: Simplify right side
    31,690.16x = 1,441,226,790.32
  5. Step 5: Solve for x
    x = 1,441,226,790.32/31,690.16
  6. Step 6: Final answer
    x = 45,478.68

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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.