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Finding the Fourth Proportional to 70,467.94, 105,560.95 and 42,372.51

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Solution

The fourth proportional to 70,467.94, 105,560.95 and 42,372.51 is: 63,474.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,467.94 : 105,560.95 = 42,372.51 : x
  2. Step 2: Convert to fraction form
    70,467.94/105,560.95 = 42,372.51/x
  3. Step 3: Cross multiply
    70,467.94x = 105,560.95 × 42,372.51
  4. Step 4: Simplify right side
    70,467.94x = 4,472,882,409.48
  5. Step 5: Solve for x
    x = 4,472,882,409.48/70,467.94
  6. Step 6: Final answer
    x = 63,474.01

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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.