Home / 78,346.30-117,519.45-59,683.90

Finding the Fourth Proportional to 78,346.30, 117,519.45 and 59,683.90

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Solution

The fourth proportional to 78,346.30, 117,519.45 and 59,683.90 is: 89,525.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,346.30 : 117,519.45 = 59,683.90 : x
  2. Step 2: Convert to fraction form
    78,346.30/117,519.45 = 59,683.90/x
  3. Step 3: Cross multiply
    78,346.30x = 117,519.45 × 59,683.90
  4. Step 4: Simplify right side
    78,346.30x = 7,014,019,101.86
  5. Step 5: Solve for x
    x = 7,014,019,101.86/78,346.30
  6. Step 6: Final answer
    x = 89,525.85

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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.