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Finding the Fourth Proportional to 103,704.19, 155,521.70 and 40,507.93

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Solution

The fourth proportional to 103,704.19, 155,521.70 and 40,507.93 is: 60,748.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,704.19 : 155,521.70 = 40,507.93 : x
  2. Step 2: Convert to fraction form
    103,704.19/155,521.70 = 40,507.93/x
  3. Step 3: Cross multiply
    103,704.19x = 155,521.70 × 40,507.93
  4. Step 4: Simplify right side
    103,704.19x = 6,299,861,934.54
  5. Step 5: Solve for x
    x = 6,299,861,934.54/103,704.19
  6. Step 6: Final answer
    x = 60,748.38

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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.