Home / 84,688.16-126,928.56-29,219.36

Finding the Fourth Proportional to 84,688.16, 126,928.56 and 29,219.36

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Solution

The fourth proportional to 84,688.16, 126,928.56 and 29,219.36 is: 43,793.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,688.16 : 126,928.56 = 29,219.36 : x
  2. Step 2: Convert to fraction form
    84,688.16/126,928.56 = 29,219.36/x
  3. Step 3: Cross multiply
    84,688.16x = 126,928.56 × 29,219.36
  4. Step 4: Simplify right side
    84,688.16x = 3,708,771,288.92
  5. Step 5: Solve for x
    x = 3,708,771,288.92/84,688.16
  6. Step 6: Final answer
    x = 43,793.27

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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.