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Finding the Fourth Proportional to 86,872.61, 130,225.68 and 27,669.92

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Solution

The fourth proportional to 86,872.61, 130,225.68 and 27,669.92 is: 41,478.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,872.61 : 130,225.68 = 27,669.92 : x
  2. Step 2: Convert to fraction form
    86,872.61/130,225.68 = 27,669.92/x
  3. Step 3: Cross multiply
    86,872.61x = 130,225.68 × 27,669.92
  4. Step 4: Simplify right side
    86,872.61x = 3,603,333,496.42
  5. Step 5: Solve for x
    x = 3,603,333,496.42/86,872.61
  6. Step 6: Final answer
    x = 41,478.36

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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.