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Finding the Fourth Proportional to 86,187.30, 129,280.92 and 27,027.51

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Solution

The fourth proportional to 86,187.30, 129,280.92 and 27,027.51 is: 40,541.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,187.30 : 129,280.92 = 27,027.51 : x
  2. Step 2: Convert to fraction form
    86,187.30/129,280.92 = 27,027.51/x
  3. Step 3: Cross multiply
    86,187.30x = 129,280.92 × 27,027.51
  4. Step 4: Simplify right side
    86,187.30x = 3,494,141,358.11
  5. Step 5: Solve for x
    x = 3,494,141,358.11/86,187.30
  6. Step 6: Final answer
    x = 40,541.26

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1.5x scale

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.