Home / 71,505,313.02-107,258,965.98-20,387,331.83

Finding the Fourth Proportional to 71,505,313.02, 107,258,965.98 and 20,387,331.83

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Solution

The fourth proportional to 71,505,313.02, 107,258,965.98 and 20,387,331.83 is: 30,581,281.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,505,313.02 : 107,258,965.98 = 20,387,331.83 : x
  2. Step 2: Convert to fraction form
    71,505,313.02/107,258,965.98 = 20,387,331.83/x
  3. Step 3: Cross multiply
    71,505,313.02x = 107,258,965.98 × 20,387,331.83
  4. Step 4: Simplify right side
    71,505,313.02x = 2,186,724,130,832,341.25
  5. Step 5: Solve for x
    x = 2,186,724,130,832,341.25/71,505,313.02
  6. Step 6: Final answer
    x = 30,581,281.85

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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.