Home / 42,658,221.20-63,987,331.80-18,723,693.20

Finding the Fourth Proportional to 42,658,221.20, 63,987,331.80 and 18,723,693.20

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Solution

The fourth proportional to 42,658,221.20, 63,987,331.80 and 18,723,693.20 is: 28,085,539.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,658,221.20 : 63,987,331.80 = 18,723,693.20 : x
  2. Step 2: Convert to fraction form
    42,658,221.20/63,987,331.80 = 18,723,693.20/x
  3. Step 3: Cross multiply
    42,658,221.20x = 63,987,331.80 × 18,723,693.20
  4. Step 4: Simplify right side
    42,658,221.20x = 1,198,079,169,309,803.75
  5. Step 5: Solve for x
    x = 1,198,079,169,309,803.75/42,658,221.20
  6. Step 6: Final answer
    x = 28,085,539.80

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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.