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Finding the Fourth Proportional to 85,412.98, 127,920.06 and 67,523.42

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Solution

The fourth proportional to 85,412.98, 127,920.06 and 67,523.42 is: 101,127.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,412.98 : 127,920.06 = 67,523.42 : x
  2. Step 2: Convert to fraction form
    85,412.98/127,920.06 = 67,523.42/x
  3. Step 3: Cross multiply
    85,412.98x = 127,920.06 × 67,523.42
  4. Step 4: Simplify right side
    85,412.98x = 8,637,600,257.61
  5. Step 5: Solve for x
    x = 8,637,600,257.61/85,412.98
  6. Step 6: Final answer
    x = 101,127.49

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1.5x scale

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.