Home / 77,891.20-116,913.60-38,492.80

Finding the Fourth Proportional to 77,891.20, 116,913.60 and 38,492.80

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Solution

The fourth proportional to 77,891.20, 116,913.60 and 38,492.80 is: 57,777.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,891.20 : 116,913.60 = 38,492.80 : x
  2. Step 2: Convert to fraction form
    77,891.20/116,913.60 = 38,492.80/x
  3. Step 3: Cross multiply
    77,891.20x = 116,913.60 × 38,492.80
  4. Step 4: Simplify right side
    77,891.20x = 4,500,331,822.08
  5. Step 5: Solve for x
    x = 4,500,331,822.08/77,891.20
  6. Step 6: Final answer
    x = 57,777.15

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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.