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Finding the Fourth Proportional to 40,930.60, 61,395.90 and 14,636.20

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Solution

The fourth proportional to 40,930.60, 61,395.90 and 14,636.20 is: 21,954.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,930.60 : 61,395.90 = 14,636.20 : x
  2. Step 2: Convert to fraction form
    40,930.60/61,395.90 = 14,636.20/x
  3. Step 3: Cross multiply
    40,930.60x = 61,395.90 × 14,636.20
  4. Step 4: Simplify right side
    40,930.60x = 898,602,671.58
  5. Step 5: Solve for x
    x = 898,602,671.58/40,930.60
  6. Step 6: Final answer
    x = 21,954.30

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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.