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Finding the Fourth Proportional to 86,681.60, 130,022.40 and 27,521.90

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Solution

The fourth proportional to 86,681.60, 130,022.40 and 27,521.90 is: 41,282.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,681.60 : 130,022.40 = 27,521.90 : x
  2. Step 2: Convert to fraction form
    86,681.60/130,022.40 = 27,521.90/x
  3. Step 3: Cross multiply
    86,681.60x = 130,022.40 × 27,521.90
  4. Step 4: Simplify right side
    86,681.60x = 3,578,463,490.56
  5. Step 5: Solve for x
    x = 3,578,463,490.56/86,681.60
  6. Step 6: Final answer
    x = 41,282.85

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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.