Home / 10,128,677.22-13,978,905.12-5,776,765.92

Finding the Fourth Proportional to 10,128,677.22, 13,978,905.12 and 5,776,765.92

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Solution

The fourth proportional to 10,128,677.22, 13,978,905.12 and 5,776,765.92 is: 7,972,695.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,128,677.22 : 13,978,905.12 = 5,776,765.92 : x
  2. Step 2: Convert to fraction form
    10,128,677.22/13,978,905.12 = 5,776,765.92/x
  3. Step 3: Cross multiply
    10,128,677.22x = 13,978,905.12 × 5,776,765.92
  4. Step 4: Simplify right side
    10,128,677.22x = 80,752,862,696,129.50
  5. Step 5: Solve for x
    x = 80,752,862,696,129.50/10,128,677.22
  6. Step 6: Final answer
    x = 7,972,695.84

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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.