Home / 71,780,331.35-99,057,260.81-40,840,500.63

Finding the Fourth Proportional to 71,780,331.35, 99,057,260.81 and 40,840,500.63

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Solution

The fourth proportional to 71,780,331.35, 99,057,260.81 and 40,840,500.63 is: 56,360,120.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,780,331.35 : 99,057,260.81 = 40,840,500.63 : x
  2. Step 2: Convert to fraction form
    71,780,331.35/99,057,260.81 = 40,840,500.63/x
  3. Step 3: Cross multiply
    71,780,331.35x = 99,057,260.81 × 40,840,500.63
  4. Step 4: Simplify right side
    71,780,331.35x = 4,045,548,122,516,879.50
  5. Step 5: Solve for x
    x = 4,045,548,122,516,879.50/71,780,331.35
  6. Step 6: Final answer
    x = 56,360,120.47

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.