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Finding the Fourth Proportional to 86,337.44, 129,504.48 and 38,926.40

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Solution

The fourth proportional to 86,337.44, 129,504.48 and 38,926.40 is: 58,388.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,337.44 : 129,504.48 = 38,926.40 : x
  2. Step 2: Convert to fraction form
    86,337.44/129,504.48 = 38,926.40/x
  3. Step 3: Cross multiply
    86,337.44x = 129,504.48 × 38,926.40
  4. Step 4: Simplify right side
    86,337.44x = 5,041,143,190.27
  5. Step 5: Solve for x
    x = 5,041,143,190.27/86,337.44
  6. Step 6: Final answer
    x = 58,388.84

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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.