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Finding the Fourth Proportional to 70,073.64, 105,173.50 and 47,529.80

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Solution

The fourth proportional to 70,073.64, 105,173.50 and 47,529.80 is: 71,337.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,073.64 : 105,173.50 = 47,529.80 : x
  2. Step 2: Convert to fraction form
    70,073.64/105,173.50 = 47,529.80/x
  3. Step 3: Cross multiply
    70,073.64x = 105,173.50 × 47,529.80
  4. Step 4: Simplify right side
    70,073.64x = 4,998,875,420.30
  5. Step 5: Solve for x
    x = 4,998,875,420.30/70,073.64
  6. Step 6: Final answer
    x = 71,337.46

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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.