Home / 84,206.64-126,323.28-31,620.12

Finding the Fourth Proportional to 84,206.64, 126,323.28 and 31,620.12

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Solution

The fourth proportional to 84,206.64, 126,323.28 and 31,620.12 is: 47,435.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,206.64 : 126,323.28 = 31,620.12 : x
  2. Step 2: Convert to fraction form
    84,206.64/126,323.28 = 31,620.12/x
  3. Step 3: Cross multiply
    84,206.64x = 126,323.28 × 31,620.12
  4. Step 4: Simplify right side
    84,206.64x = 3,994,357,272.39
  5. Step 5: Solve for x
    x = 3,994,357,272.39/84,206.64
  6. Step 6: Final answer
    x = 47,435.18

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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.