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Finding the Fourth Proportional to 60,305.88, 90,441.54 and 20,320.50

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Solution

The fourth proportional to 60,305.88, 90,441.54 and 20,320.50 is: 30,474.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,305.88 : 90,441.54 = 20,320.50 : x
  2. Step 2: Convert to fraction form
    60,305.88/90,441.54 = 20,320.50/x
  3. Step 3: Cross multiply
    60,305.88x = 90,441.54 × 20,320.50
  4. Step 4: Simplify right side
    60,305.88x = 1,837,817,313.57
  5. Step 5: Solve for x
    x = 1,837,817,313.57/60,305.88
  6. Step 6: Final answer
    x = 30,474.93

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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.