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Finding the Fourth Proportional to 86,600.25, 129,904.16 and 27,440.28

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Solution

The fourth proportional to 86,600.25, 129,904.16 and 27,440.28 is: 41,161.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,600.25 : 129,904.16 = 27,440.28 : x
  2. Step 2: Convert to fraction form
    86,600.25/129,904.16 = 27,440.28/x
  3. Step 3: Cross multiply
    86,600.25x = 129,904.16 × 27,440.28
  4. Step 4: Simplify right side
    86,600.25x = 3,564,606,386.36
  5. Step 5: Solve for x
    x = 3,564,606,386.36/86,600.25
  6. Step 6: Final answer
    x = 41,161.62

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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.