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Finding the Fourth Proportional to 70,353.88, 105,530.61 and 54,366.68

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Solution

The fourth proportional to 70,353.88, 105,530.61 and 54,366.68 is: 81,549.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,353.88 : 105,530.61 = 54,366.68 : x
  2. Step 2: Convert to fraction form
    70,353.88/105,530.61 = 54,366.68/x
  3. Step 3: Cross multiply
    70,353.88x = 105,530.61 × 54,366.68
  4. Step 4: Simplify right side
    70,353.88x = 5,737,348,904.07
  5. Step 5: Solve for x
    x = 5,737,348,904.07/70,353.88
  6. Step 6: Final answer
    x = 81,549.86

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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.