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Finding the Fourth Proportional to 69,658.88, 96,130.68 and 42,425.60

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Solution

The fourth proportional to 69,658.88, 96,130.68 and 42,425.60 is: 58,548.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,658.88 : 96,130.68 = 42,425.60 : x
  2. Step 2: Convert to fraction form
    69,658.88/96,130.68 = 42,425.60/x
  3. Step 3: Cross multiply
    69,658.88x = 96,130.68 × 42,425.60
  4. Step 4: Simplify right side
    69,658.88x = 4,078,401,777.41
  5. Step 5: Solve for x
    x = 4,078,401,777.41/69,658.88
  6. Step 6: Final answer
    x = 58,548.20

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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.