Home / 49,780.20-74,816.10-48,905.40

Finding the Fourth Proportional to 49,780.20, 74,816.10 and 48,905.40

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Solution

The fourth proportional to 49,780.20, 74,816.10 and 48,905.40 is: 73,501.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    49,780.20 : 74,816.10 = 48,905.40 : x
  2. Step 2: Convert to fraction form
    49,780.20/74,816.10 = 48,905.40/x
  3. Step 3: Cross multiply
    49,780.20x = 74,816.10 × 48,905.40
  4. Step 4: Simplify right side
    49,780.20x = 3,658,911,296.94
  5. Step 5: Solve for x
    x = 3,658,911,296.94/49,780.20
  6. Step 6: Final answer
    x = 73,501.34

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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.