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Finding the Fourth Proportional to 86,757.60, 130,136.40 and 24,428.10

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Solution

The fourth proportional to 86,757.60, 130,136.40 and 24,428.10 is: 36,642.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,757.60 : 130,136.40 = 24,428.10 : x
  2. Step 2: Convert to fraction form
    86,757.60/130,136.40 = 24,428.10/x
  3. Step 3: Cross multiply
    86,757.60x = 130,136.40 × 24,428.10
  4. Step 4: Simplify right side
    86,757.60x = 3,178,984,992.84
  5. Step 5: Solve for x
    x = 3,178,984,992.84/86,757.60
  6. Step 6: Final answer
    x = 36,642.15

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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.