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Finding the Fourth Proportional to 73,155.60, 100,954.64 and 39,621.60

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Solution

The fourth proportional to 73,155.60, 100,954.64 and 39,621.60 is: 54,677.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,155.60 : 100,954.64 = 39,621.60 : x
  2. Step 2: Convert to fraction form
    73,155.60/100,954.64 = 39,621.60/x
  3. Step 3: Cross multiply
    73,155.60x = 100,954.64 × 39,621.60
  4. Step 4: Simplify right side
    73,155.60x = 3,999,984,364.22
  5. Step 5: Solve for x
    x = 3,999,984,364.22/73,155.60
  6. Step 6: Final answer
    x = 54,677.76

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.