Home / 78,349.20-117,600.60-38,950.80

Finding the Fourth Proportional to 78,349.20, 117,600.60 and 38,950.80

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Solution

The fourth proportional to 78,349.20, 117,600.60 and 38,950.80 is: 58,464.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,349.20 : 117,600.60 = 38,950.80 : x
  2. Step 2: Convert to fraction form
    78,349.20/117,600.60 = 38,950.80/x
  3. Step 3: Cross multiply
    78,349.20x = 117,600.60 × 38,950.80
  4. Step 4: Simplify right side
    78,349.20x = 4,580,637,450.48
  5. Step 5: Solve for x
    x = 4,580,637,450.48/78,349.20
  6. Step 6: Final answer
    x = 58,464.38

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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.