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Finding the Fourth Proportional to 40,680.59, 61,030.09 and 21,960.23

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Solution

The fourth proportional to 40,680.59, 61,030.09 and 21,960.23 is: 32,945.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,680.59 : 61,030.09 = 21,960.23 : x
  2. Step 2: Convert to fraction form
    40,680.59/61,030.09 = 21,960.23/x
  3. Step 3: Cross multiply
    40,680.59x = 61,030.09 × 21,960.23
  4. Step 4: Simplify right side
    40,680.59x = 1,340,234,813.32
  5. Step 5: Solve for x
    x = 1,340,234,813.32/40,680.59
  6. Step 6: Final answer
    x = 32,945.31

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Double scale
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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.