Home / 42,128,791.20-63,053,218.80-30,581,431.20

Finding the Fourth Proportional to 42,128,791.20, 63,053,218.80 and 30,581,431.20

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Solution

The fourth proportional to 42,128,791.20, 63,053,218.80 and 30,581,431.20 is: 45,770,543.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,128,791.20 : 63,053,218.80 = 30,581,431.20 : x
  2. Step 2: Convert to fraction form
    42,128,791.20/63,053,218.80 = 30,581,431.20/x
  3. Step 3: Cross multiply
    42,128,791.20x = 63,053,218.80 × 30,581,431.20
  4. Step 4: Simplify right side
    42,128,791.20x = 1,928,257,672,670,746.50
  5. Step 5: Solve for x
    x = 1,928,257,672,670,746.50/42,128,791.20
  6. Step 6: Final answer
    x = 45,770,543.56

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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.