Home / 78,207.54-107,898.12-51,364.59

Finding the Fourth Proportional to 78,207.54, 107,898.12 and 51,364.59

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Solution

The fourth proportional to 78,207.54, 107,898.12 and 51,364.59 is: 70,864.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,207.54 : 107,898.12 = 51,364.59 : x
  2. Step 2: Convert to fraction form
    78,207.54/107,898.12 = 51,364.59/x
  3. Step 3: Cross multiply
    78,207.54x = 107,898.12 × 51,364.59
  4. Step 4: Simplify right side
    78,207.54x = 5,542,142,695.57
  5. Step 5: Solve for x
    x = 5,542,142,695.57/78,207.54
  6. Step 6: Final answer
    x = 70,864.56

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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.