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Finding the Fourth Proportional to 70,467.63, 105,560.47 and 42,372.20

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Solution

The fourth proportional to 70,467.63, 105,560.47 and 42,372.20 is: 63,473.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,467.63 : 105,560.47 = 42,372.20 : x
  2. Step 2: Convert to fraction form
    70,467.63/105,560.47 = 42,372.20/x
  3. Step 3: Cross multiply
    70,467.63x = 105,560.47 × 42,372.20
  4. Step 4: Simplify right side
    70,467.63x = 4,472,829,189.19
  5. Step 5: Solve for x
    x = 4,472,829,189.19/70,467.63
  6. Step 6: Final answer
    x = 63,473.53

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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.