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Finding the Fourth Proportional to 49,655.40, 74,483.10 and 31,940.70

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Solution

The fourth proportional to 49,655.40, 74,483.10 and 31,940.70 is: 47,911.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    49,655.40 : 74,483.10 = 31,940.70 : x
  2. Step 2: Convert to fraction form
    49,655.40/74,483.10 = 31,940.70/x
  3. Step 3: Cross multiply
    49,655.40x = 74,483.10 × 31,940.70
  4. Step 4: Simplify right side
    49,655.40x = 2,379,042,352.17
  5. Step 5: Solve for x
    x = 2,379,042,352.17/49,655.40
  6. Step 6: Final answer
    x = 47,911.05

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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.