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Finding the Fourth Proportional to 86,765.88, 130,035.06 and 49,343.16

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Solution

The fourth proportional to 86,765.88, 130,035.06 and 49,343.16 is: 73,950.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,765.88 : 130,035.06 = 49,343.16 : x
  2. Step 2: Convert to fraction form
    86,765.88/130,035.06 = 49,343.16/x
  3. Step 3: Cross multiply
    86,765.88x = 130,035.06 × 49,343.16
  4. Step 4: Simplify right side
    86,765.88x = 6,416,340,771.19
  5. Step 5: Solve for x
    x = 6,416,340,771.19/86,765.88
  6. Step 6: Final answer
    x = 73,950.05

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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.