Home / 78,199.75-117,004.38-48,478.42

Finding the Fourth Proportional to 78,199.75, 117,004.38 and 48,478.42

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Solution

The fourth proportional to 78,199.75, 117,004.38 and 48,478.42 is: 72,534.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,199.75 : 117,004.38 = 48,478.42 : x
  2. Step 2: Convert to fraction form
    78,199.75/117,004.38 = 48,478.42/x
  3. Step 3: Cross multiply
    78,199.75x = 117,004.38 × 48,478.42
  4. Step 4: Simplify right side
    78,199.75x = 5,672,187,475.48
  5. Step 5: Solve for x
    x = 5,672,187,475.48/78,199.75
  6. Step 6: Final answer
    x = 72,534.60

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1.5x scale

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.