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Finding the Fourth Proportional to 102,479.31, 153,707.40 and 27,604.89

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Solution

The fourth proportional to 102,479.31, 153,707.40 and 27,604.89 is: 41,404.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,479.31 : 153,707.40 = 27,604.89 : x
  2. Step 2: Convert to fraction form
    102,479.31/153,707.40 = 27,604.89/x
  3. Step 3: Cross multiply
    102,479.31x = 153,707.40 × 27,604.89
  4. Step 4: Simplify right side
    102,479.31x = 4,243,075,869.19
  5. Step 5: Solve for x
    x = 4,243,075,869.19/102,479.31
  6. Step 6: Final answer
    x = 41,404.22

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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.