Home / 78,635.23-117,868.00-38,607.67

Finding the Fourth Proportional to 78,635.23, 117,868.00 and 38,607.67

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Solution

The fourth proportional to 78,635.23, 117,868.00 and 38,607.67 is: 57,869.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,635.23 : 117,868.00 = 38,607.67 : x
  2. Step 2: Convert to fraction form
    78,635.23/117,868.00 = 38,607.67/x
  3. Step 3: Cross multiply
    78,635.23x = 117,868.00 × 38,607.67
  4. Step 4: Simplify right side
    78,635.23x = 4,550,608,663.53
  5. Step 5: Solve for x
    x = 4,550,608,663.53/78,635.23
  6. Step 6: Final answer
    x = 57,869.84

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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.