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Finding the Fourth Proportional to 86,980.37, 130,478.53 and 27,009.19

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Solution

The fourth proportional to 86,980.37, 130,478.53 and 27,009.19 is: 40,516.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,980.37 : 130,478.53 = 27,009.19 : x
  2. Step 2: Convert to fraction form
    86,980.37/130,478.53 = 27,009.19/x
  3. Step 3: Cross multiply
    86,980.37x = 130,478.53 × 27,009.19
  4. Step 4: Simplify right side
    86,980.37x = 3,524,119,013.97
  5. Step 5: Solve for x
    x = 3,524,119,013.97/86,980.37
  6. Step 6: Final answer
    x = 40,516.26

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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.