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Finding the Fourth Proportional to 64,797.70, 89,437.50 and 42,193.12

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Solution

The fourth proportional to 64,797.70, 89,437.50 and 42,193.12 is: 58,237.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,797.70 : 89,437.50 = 42,193.12 : x
  2. Step 2: Convert to fraction form
    64,797.70/89,437.50 = 42,193.12/x
  3. Step 3: Cross multiply
    64,797.70x = 89,437.50 × 42,193.12
  4. Step 4: Simplify right side
    64,797.70x = 3,773,647,170
  5. Step 5: Solve for x
    x = 3,773,647,170/64,797.70
  6. Step 6: Final answer
    x = 58,237.36

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.