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Finding the Fourth Proportional to 86,852.49, 130,135.64 and 79,589.49

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Solution

The fourth proportional to 86,852.49, 130,135.64 and 79,589.49 is: 119,253.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,852.49 : 130,135.64 = 79,589.49 : x
  2. Step 2: Convert to fraction form
    86,852.49/130,135.64 = 79,589.49/x
  3. Step 3: Cross multiply
    86,852.49x = 130,135.64 × 79,589.49
  4. Step 4: Simplify right side
    86,852.49x = 10,357,428,820.48
  5. Step 5: Solve for x
    x = 10,357,428,820.48/86,852.49
  6. Step 6: Final answer
    x = 119,253.10

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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.