Home / 78,258.96-117,186.48-51,881.04

Finding the Fourth Proportional to 78,258.96, 117,186.48 and 51,881.04

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Solution

The fourth proportional to 78,258.96, 117,186.48 and 51,881.04 is: 77,687.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,258.96 : 117,186.48 = 51,881.04 : x
  2. Step 2: Convert to fraction form
    78,258.96/117,186.48 = 51,881.04/x
  3. Step 3: Cross multiply
    78,258.96x = 117,186.48 × 51,881.04
  4. Step 4: Simplify right side
    78,258.96x = 6,079,756,456.34
  5. Step 5: Solve for x
    x = 6,079,756,456.34/78,258.96
  6. Step 6: Final answer
    x = 77,687.67

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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.