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Finding the Fourth Proportional to 67,158.56, 100,605.80 and 39,019.55

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Solution

The fourth proportional to 67,158.56, 100,605.80 and 39,019.55 is: 58,452.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,158.56 : 100,605.80 = 39,019.55 : x
  2. Step 2: Convert to fraction form
    67,158.56/100,605.80 = 39,019.55/x
  3. Step 3: Cross multiply
    67,158.56x = 100,605.80 × 39,019.55
  4. Step 4: Simplify right side
    67,158.56x = 3,925,592,345.26
  5. Step 5: Solve for x
    x = 3,925,592,345.26/67,158.56
  6. Step 6: Final answer
    x = 58,452.60

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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.