Home / 83,739.90-125,595.45-31,122.30

Finding the Fourth Proportional to 83,739.90, 125,595.45 and 31,122.30

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Solution

The fourth proportional to 83,739.90, 125,595.45 and 31,122.30 is: 46,678.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,739.90 : 125,595.45 = 31,122.30 : x
  2. Step 2: Convert to fraction form
    83,739.90/125,595.45 = 31,122.30/x
  3. Step 3: Cross multiply
    83,739.90x = 125,595.45 × 31,122.30
  4. Step 4: Simplify right side
    83,739.90x = 3,908,819,273.54
  5. Step 5: Solve for x
    x = 3,908,819,273.54/83,739.90
  6. Step 6: Final answer
    x = 46,678.10

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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.