Home / 39,309.76-54,300.54-31,407.40

Finding the Fourth Proportional to 39,309.76, 54,300.54 and 31,407.40

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Solution

The fourth proportional to 39,309.76, 54,300.54 and 31,407.40 is: 43,384.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,309.76 : 54,300.54 = 31,407.40 : x
  2. Step 2: Convert to fraction form
    39,309.76/54,300.54 = 31,407.40/x
  3. Step 3: Cross multiply
    39,309.76x = 54,300.54 × 31,407.40
  4. Step 4: Simplify right side
    39,309.76x = 1,705,438,780.00
  5. Step 5: Solve for x
    x = 1,705,438,780.00/39,309.76
  6. Step 6: Final answer
    x = 43,384.61

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.