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Finding the Fourth Proportional to 86,788.88, 130,202.86 and 30,632.98

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Solution

The fourth proportional to 86,788.88, 130,202.86 and 30,632.98 is: 45,956.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,788.88 : 130,202.86 = 30,632.98 : x
  2. Step 2: Convert to fraction form
    86,788.88/130,202.86 = 30,632.98/x
  3. Step 3: Cross multiply
    86,788.88x = 130,202.86 × 30,632.98
  4. Step 4: Simplify right side
    86,788.88x = 3,988,501,606.32
  5. Step 5: Solve for x
    x = 3,988,501,606.32/86,788.88
  6. Step 6: Final answer
    x = 45,956.37

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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.