Home / 81,146,935-121,727,487.30-20,562,663.16

Finding the Fourth Proportional to 81,146,935, 121,727,487.30 and 20,562,663.16

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Solution

The fourth proportional to 81,146,935, 121,727,487.30 and 20,562,663.16 is: 30,845,790.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,146,935 : 121,727,487.30 = 20,562,663.16 : x
  2. Step 2: Convert to fraction form
    81,146,935/121,727,487.30 = 20,562,663.16/x
  3. Step 3: Cross multiply
    81,146,935x = 121,727,487.30 × 20,562,663.16
  4. Step 4: Simplify right side
    81,146,935x = 2,503,041,318,663,078
  5. Step 5: Solve for x
    x = 2,503,041,318,663,078/81,146,935
  6. Step 6: Final answer
    x = 30,845,790.03

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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.