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Finding the Fourth Proportional to 82,930.40, 124,492.80 and 49,680.80

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Solution

The fourth proportional to 82,930.40, 124,492.80 and 49,680.80 is: 74,579.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,930.40 : 124,492.80 = 49,680.80 : x
  2. Step 2: Convert to fraction form
    82,930.40/124,492.80 = 49,680.80/x
  3. Step 3: Cross multiply
    82,930.40x = 124,492.80 × 49,680.80
  4. Step 4: Simplify right side
    82,930.40x = 6,184,901,898.24
  5. Step 5: Solve for x
    x = 6,184,901,898.24/82,930.40
  6. Step 6: Final answer
    x = 74,579.43

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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.