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Finding the Fourth Proportional to 72,659.94, 100,282.74 and 42,445.17

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Solution

The fourth proportional to 72,659.94, 100,282.74 and 42,445.17 is: 58,581.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,659.94 : 100,282.74 = 42,445.17 : x
  2. Step 2: Convert to fraction form
    72,659.94/100,282.74 = 42,445.17/x
  3. Step 3: Cross multiply
    72,659.94x = 100,282.74 × 42,445.17
  4. Step 4: Simplify right side
    72,659.94x = 4,256,517,947.37
  5. Step 5: Solve for x
    x = 4,256,517,947.37/72,659.94
  6. Step 6: Final answer
    x = 58,581.36

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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.