Home / 83,909.36-125,789.16-31,321.28

Finding the Fourth Proportional to 83,909.36, 125,789.16 and 31,321.28

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Solution

The fourth proportional to 83,909.36, 125,789.16 and 31,321.28 is: 46,953.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,909.36 : 125,789.16 = 31,321.28 : x
  2. Step 2: Convert to fraction form
    83,909.36/125,789.16 = 31,321.28/x
  3. Step 3: Cross multiply
    83,909.36x = 125,789.16 × 31,321.28
  4. Step 4: Simplify right side
    83,909.36x = 3,939,877,501.32
  5. Step 5: Solve for x
    x = 3,939,877,501.32/83,909.36
  6. Step 6: Final answer
    x = 46,953.97

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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.