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Finding the Fourth Proportional to 72,338.40, 108,370.44 and 42,667.92

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Solution

The fourth proportional to 72,338.40, 108,370.44 and 42,667.92 is: 63,920.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,338.40 : 108,370.44 = 42,667.92 : x
  2. Step 2: Convert to fraction form
    72,338.40/108,370.44 = 42,667.92/x
  3. Step 3: Cross multiply
    72,338.40x = 108,370.44 × 42,667.92
  4. Step 4: Simplify right side
    72,338.40x = 4,623,941,264.28
  5. Step 5: Solve for x
    x = 4,623,941,264.28/72,338.40
  6. Step 6: Final answer
    x = 63,920.98

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.