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Finding the Fourth Proportional to 86,751.36, 130,242.24 and 55,601.28

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Solution

The fourth proportional to 86,751.36, 130,242.24 and 55,601.28 is: 83,475.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,751.36 : 130,242.24 = 55,601.28 : x
  2. Step 2: Convert to fraction form
    86,751.36/130,242.24 = 55,601.28/x
  3. Step 3: Cross multiply
    86,751.36x = 130,242.24 × 55,601.28
  4. Step 4: Simplify right side
    86,751.36x = 7,241,635,254.07
  5. Step 5: Solve for x
    x = 7,241,635,254.07/86,751.36
  6. Step 6: Final answer
    x = 83,475.75

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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.