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Finding the Fourth Proportional to 72,511.70, 108,770.50 and 34,541.45

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Solution

The fourth proportional to 72,511.70, 108,770.50 and 34,541.45 is: 51,813.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,511.70 : 108,770.50 = 34,541.45 : x
  2. Step 2: Convert to fraction form
    72,511.70/108,770.50 = 34,541.45/x
  3. Step 3: Cross multiply
    72,511.70x = 108,770.50 × 34,541.45
  4. Step 4: Simplify right side
    72,511.70x = 3,757,090,342.59
  5. Step 5: Solve for x
    x = 3,757,090,342.59/72,511.70
  6. Step 6: Final answer
    x = 51,813.58

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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.