Home / 84,276.40-126,463.20-31,723.60

Finding the Fourth Proportional to 84,276.40, 126,463.20 and 31,723.60

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Solution

The fourth proportional to 84,276.40, 126,463.20 and 31,723.60 is: 47,603.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,276.40 : 126,463.20 = 31,723.60 : x
  2. Step 2: Convert to fraction form
    84,276.40/126,463.20 = 31,723.60/x
  3. Step 3: Cross multiply
    84,276.40x = 126,463.20 × 31,723.60
  4. Step 4: Simplify right side
    84,276.40x = 4,011,867,971.52
  5. Step 5: Solve for x
    x = 4,011,867,971.52/84,276.40
  6. Step 6: Final answer
    x = 47,603.69

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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.