Home / 30,121,142.80-45,131,947.80-25,642,166.80

Finding the Fourth Proportional to 30,121,142.80, 45,131,947.80 and 25,642,166.80

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Solution

The fourth proportional to 30,121,142.80, 45,131,947.80 and 25,642,166.80 is: 38,420,884.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,121,142.80 : 45,131,947.80 = 25,642,166.80 : x
  2. Step 2: Convert to fraction form
    30,121,142.80/45,131,947.80 = 25,642,166.80/x
  3. Step 3: Cross multiply
    30,121,142.80x = 45,131,947.80 × 25,642,166.80
  4. Step 4: Simplify right side
    30,121,142.80x = 1,157,280,933,496,493
  5. Step 5: Solve for x
    x = 1,157,280,933,496,493/30,121,142.80
  6. Step 6: Final answer
    x = 38,420,884.00

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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.