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Finding the Fourth Proportional to 86,954.70, 130,343.79 and 49,437.22

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Solution

The fourth proportional to 86,954.70, 130,343.79 and 49,437.22 is: 74,105.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,954.70 : 130,343.79 = 49,437.22 : x
  2. Step 2: Convert to fraction form
    86,954.70/130,343.79 = 49,437.22/x
  3. Step 3: Cross multiply
    86,954.70x = 130,343.79 × 49,437.22
  4. Step 4: Simplify right side
    86,954.70x = 6,443,834,621.86
  5. Step 5: Solve for x
    x = 6,443,834,621.86/86,954.70
  6. Step 6: Final answer
    x = 74,105.65

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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.