Home / 80,313.24-120,475.78-21,148.50

Finding the Fourth Proportional to 80,313.24, 120,475.78 and 21,148.50

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Solution

The fourth proportional to 80,313.24, 120,475.78 and 21,148.50 is: 31,724.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,313.24 : 120,475.78 = 21,148.50 : x
  2. Step 2: Convert to fraction form
    80,313.24/120,475.78 = 21,148.50/x
  3. Step 3: Cross multiply
    80,313.24x = 120,475.78 × 21,148.50
  4. Step 4: Simplify right side
    80,313.24x = 2,547,881,980.46
  5. Step 5: Solve for x
    x = 2,547,881,980.46/80,313.24
  6. Step 6: Final answer
    x = 31,724.31

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.