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Finding the Fourth Proportional to 101,480.57, 140,039.74 and 56,160.46

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Solution

The fourth proportional to 101,480.57, 140,039.74 and 56,160.46 is: 77,499.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,480.57 : 140,039.74 = 56,160.46 : x
  2. Step 2: Convert to fraction form
    101,480.57/140,039.74 = 56,160.46/x
  3. Step 3: Cross multiply
    101,480.57x = 140,039.74 × 56,160.46
  4. Step 4: Simplify right side
    101,480.57x = 7,864,696,216.68
  5. Step 5: Solve for x
    x = 7,864,696,216.68/101,480.57
  6. Step 6: Final answer
    x = 77,499.53

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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.