Home / 42,554,605.40-63,789,917.70-20,971,539.80

Finding the Fourth Proportional to 42,554,605.40, 63,789,917.70 and 20,971,539.80

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Solution

The fourth proportional to 42,554,605.40, 63,789,917.70 and 20,971,539.80 is: 31,436,616.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,554,605.40 : 63,789,917.70 = 20,971,539.80 : x
  2. Step 2: Convert to fraction form
    42,554,605.40/63,789,917.70 = 20,971,539.80/x
  3. Step 3: Cross multiply
    42,554,605.40x = 63,789,917.70 × 20,971,539.80
  4. Step 4: Simplify right side
    42,554,605.40x = 1,337,772,797,884,274.50
  5. Step 5: Solve for x
    x = 1,337,772,797,884,274.50/42,554,605.40
  6. Step 6: Final answer
    x = 31,436,616.21

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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.