Home / 31,986,189.40-47,884,805.70-21,215,651.80

Finding the Fourth Proportional to 31,986,189.40, 47,884,805.70 and 21,215,651.80

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Solution

The fourth proportional to 31,986,189.40, 47,884,805.70 and 21,215,651.80 is: 31,760,812.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,986,189.40 : 47,884,805.70 = 21,215,651.80 : x
  2. Step 2: Convert to fraction form
    31,986,189.40/47,884,805.70 = 21,215,651.80/x
  3. Step 3: Cross multiply
    31,986,189.40x = 47,884,805.70 × 21,215,651.80
  4. Step 4: Simplify right side
    31,986,189.40x = 1,015,907,364,241,855.38
  5. Step 5: Solve for x
    x = 1,015,907,364,241,855.38/31,986,189.40
  6. Step 6: Final answer
    x = 31,760,812.50

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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.