Home / 78,205.28-107,881.67-47,587.73

Finding the Fourth Proportional to 78,205.28, 107,881.67 and 47,587.73

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Solution

The fourth proportional to 78,205.28, 107,881.67 and 47,587.73 is: 65,645.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,205.28 : 107,881.67 = 47,587.73 : x
  2. Step 2: Convert to fraction form
    78,205.28/107,881.67 = 47,587.73/x
  3. Step 3: Cross multiply
    78,205.28x = 107,881.67 × 47,587.73
  4. Step 4: Simplify right side
    78,205.28x = 5,133,843,363.47
  5. Step 5: Solve for x
    x = 5,133,843,363.47/78,205.28
  6. Step 6: Final answer
    x = 65,645.74

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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.