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Finding the Fourth Proportional to 67,570.40, 101,384.40 and 42,629.60

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Solution

The fourth proportional to 67,570.40, 101,384.40 and 42,629.60 is: 63,962.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,570.40 : 101,384.40 = 42,629.60 : x
  2. Step 2: Convert to fraction form
    67,570.40/101,384.40 = 42,629.60/x
  3. Step 3: Cross multiply
    67,570.40x = 101,384.40 × 42,629.60
  4. Step 4: Simplify right side
    67,570.40x = 4,321,976,418.24
  5. Step 5: Solve for x
    x = 4,321,976,418.24/67,570.40
  6. Step 6: Final answer
    x = 63,962.57

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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.