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Finding the Fourth Proportional to 86,102.42, 129,153.62 and 26,938.60

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Solution

The fourth proportional to 86,102.42, 129,153.62 and 26,938.60 is: 40,407.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,102.42 : 129,153.62 = 26,938.60 : x
  2. Step 2: Convert to fraction form
    86,102.42/129,153.62 = 26,938.60/x
  3. Step 3: Cross multiply
    86,102.42x = 129,153.62 × 26,938.60
  4. Step 4: Simplify right side
    86,102.42x = 3,479,217,061.96
  5. Step 5: Solve for x
    x = 3,479,217,061.96/86,102.42
  6. Step 6: Final answer
    x = 40,407.89

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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.