Home / 78,723.95-118,108.92-25,414.67

Finding the Fourth Proportional to 78,723.95, 118,108.92 and 25,414.67

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Solution

The fourth proportional to 78,723.95, 118,108.92 and 25,414.67 is: 38,129.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,723.95 : 118,108.92 = 25,414.67 : x
  2. Step 2: Convert to fraction form
    78,723.95/118,108.92 = 25,414.67/x
  3. Step 3: Cross multiply
    78,723.95x = 118,108.92 × 25,414.67
  4. Step 4: Simplify right side
    78,723.95x = 3,001,699,225.86
  5. Step 5: Solve for x
    x = 3,001,699,225.86/78,723.95
  6. Step 6: Final answer
    x = 38,129.43

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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.