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Finding the Fourth Proportional to 73,905.60, 101,989.52 and 40,371.60

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Solution

The fourth proportional to 73,905.60, 101,989.52 and 40,371.60 is: 55,712.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,905.60 : 101,989.52 = 40,371.60 : x
  2. Step 2: Convert to fraction form
    73,905.60/101,989.52 = 40,371.60/x
  3. Step 3: Cross multiply
    73,905.60x = 101,989.52 × 40,371.60
  4. Step 4: Simplify right side
    73,905.60x = 4,117,480,105.63
  5. Step 5: Solve for x
    x = 4,117,480,105.63/73,905.60
  6. Step 6: Final answer
    x = 55,712.69

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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.