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Finding the Fourth Proportional to 86,752.36, 130,243.74 and 55,602.28

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Solution

The fourth proportional to 86,752.36, 130,243.74 and 55,602.28 is: 83,477.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,752.36 : 130,243.74 = 55,602.28 : x
  2. Step 2: Convert to fraction form
    86,752.36/130,243.74 = 55,602.28/x
  3. Step 3: Cross multiply
    86,752.36x = 130,243.74 × 55,602.28
  4. Step 4: Simplify right side
    86,752.36x = 7,241,848,899.73
  5. Step 5: Solve for x
    x = 7,241,848,899.73/86,752.36
  6. Step 6: Final answer
    x = 83,477.26

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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.