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Finding the Fourth Proportional to 70,124.90, 105,238.10 and 27,436.64

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Solution

The fourth proportional to 70,124.90, 105,238.10 and 27,436.64 is: 41,174.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,124.90 : 105,238.10 = 27,436.64 : x
  2. Step 2: Convert to fraction form
    70,124.90/105,238.10 = 27,436.64/x
  3. Step 3: Cross multiply
    70,124.90x = 105,238.10 × 27,436.64
  4. Step 4: Simplify right side
    70,124.90x = 2,887,379,863.98
  5. Step 5: Solve for x
    x = 2,887,379,863.98/70,124.90
  6. Step 6: Final answer
    x = 41,174.82

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1.5x scale

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.