Home / 78,140.73-107,747.36-56,587.85

Finding the Fourth Proportional to 78,140.73, 107,747.36 and 56,587.85

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Solution

The fourth proportional to 78,140.73, 107,747.36 and 56,587.85 is: 78,028.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,140.73 : 107,747.36 = 56,587.85 : x
  2. Step 2: Convert to fraction form
    78,140.73/107,747.36 = 56,587.85/x
  3. Step 3: Cross multiply
    78,140.73x = 107,747.36 × 56,587.85
  4. Step 4: Simplify right side
    78,140.73x = 6,097,190,623.90
  5. Step 5: Solve for x
    x = 6,097,190,623.90/78,140.73
  6. Step 6: Final answer
    x = 78,028.33

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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.