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Finding the Fourth Proportional to 86,669.52, 130,008.90 and 27,509.82

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Solution

The fourth proportional to 86,669.52, 130,008.90 and 27,509.82 is: 41,266.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,669.52 : 130,008.90 = 27,509.82 : x
  2. Step 2: Convert to fraction form
    86,669.52/130,008.90 = 27,509.82/x
  3. Step 3: Cross multiply
    86,669.52x = 130,008.90 × 27,509.82
  4. Step 4: Simplify right side
    86,669.52x = 3,576,521,437.40
  5. Step 5: Solve for x
    x = 3,576,521,437.40/86,669.52
  6. Step 6: Final answer
    x = 41,266.20

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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.