Home / 78,378.48-117,334.44-47,118.96

Finding the Fourth Proportional to 78,378.48, 117,334.44 and 47,118.96

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Solution

The fourth proportional to 78,378.48, 117,334.44 and 47,118.96 is: 70,538.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,378.48 : 117,334.44 = 47,118.96 : x
  2. Step 2: Convert to fraction form
    78,378.48/117,334.44 = 47,118.96/x
  3. Step 3: Cross multiply
    78,378.48x = 117,334.44 × 47,118.96
  4. Step 4: Simplify right side
    78,378.48x = 5,528,676,784.98
  5. Step 5: Solve for x
    x = 5,528,676,784.98/78,378.48
  6. Step 6: Final answer
    x = 70,538.20

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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.