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Finding the Fourth Proportional to 40,959.40, 61,323.90 and 36,812.20

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Solution

The fourth proportional to 40,959.40, 61,323.90 and 36,812.20 is: 55,114.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,959.40 : 61,323.90 = 36,812.20 : x
  2. Step 2: Convert to fraction form
    40,959.40/61,323.90 = 36,812.20/x
  3. Step 3: Cross multiply
    40,959.40x = 61,323.90 × 36,812.20
  4. Step 4: Simplify right side
    40,959.40x = 2,257,467,671.58
  5. Step 5: Solve for x
    x = 2,257,467,671.58/40,959.40
  6. Step 6: Final answer
    x = 55,114.76

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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.