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Finding the Fourth Proportional to 73,677.60, 101,671.20 and 40,143.60

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Solution

The fourth proportional to 73,677.60, 101,671.20 and 40,143.60 is: 55,396.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,677.60 : 101,671.20 = 40,143.60 : x
  2. Step 2: Convert to fraction form
    73,677.60/101,671.20 = 40,143.60/x
  3. Step 3: Cross multiply
    73,677.60x = 101,671.20 × 40,143.60
  4. Step 4: Simplify right side
    73,677.60x = 4,081,447,984.32
  5. Step 5: Solve for x
    x = 4,081,447,984.32/73,677.60
  6. Step 6: Final answer
    x = 55,396.05

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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.